上位 200 件のコメント表示する 500

[–]emoposer 3640ポイント3641ポイント  (826子コメント)

On a serious note, Calculus is very specific and widely taught, whereas statistics are very broad and only specifically taught. It's a tragedy.

Edit: I am saying that statistics should be taught more not that we should stop teaching calculus! Please stop telling me that Calculus is necessary for higher level stats, I know that. I never said we shouldn't learn Calculus, I'm just saying statistics is undervalued, that is all.

Edit: by board and specific I am referring to applications not importance. Calculus has little use out of STEM and fiance, whereas statistics is used heavily in those fields as well as psychology, management, marketing, government, every single industry on earth. We need both. All I am saying is that statistics should be taught, that's it.

[–]CrimsonPig 1472ポイント1473ポイント  (438子コメント)

The stats classes I took in college really opened my eyes to all the bullshit conclusions that some people try to draw from studies. So often there's some kind of missing variable or the numbers don't really say anything, but it'll be twisted around to suit whatever claim they want to make.

[–]PunjabiPlaya 1992ポイント1993ポイント  (107子コメント)

"Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital."

Aaron Levenstein

[–]BangedYourMum 321ポイント322ポイント  (40子コメント)

like boobies

[–]discontinuity 120ポイント121ポイント  (36子コメント)

My favorite kind of bees: the ones that give milk.

[–]Kazang 374ポイント375ポイント  (88子コメント)

A rather striking example of how misleading statistics can be is the introduction of metal helmets to british troops in WW1. After the introduction of helmets the number of head wounds went up, leading to many of the officers and commanders to think that the helmets were a bad idea and so ordered there men not to wear the helmets. But of course the reason for the increase in head wounds is because the helmets prevented fatalities that were reduced to wounds. Fortunately this was realised by all eventually and helmets became essential equipment.

[–]goomyman 241ポイント242ポイント  (50子コメント)

my favorite in WW1/WW2 was only adding armor to planes that returned from battle where there were not bullet holes, places with bullet holes were less vital spots.

Places without bullet holes when hit were the places the planes couldn't fly back from.

[–]chizdfw 81ポイント82ポイント  (25子コメント)

That's a really hard way to collect your data.

[–]zaffle 140ポイント141ポイント  (8子コメント)

Tactics and safety are written with the blood of those who came before.

[–]Meihem76 97ポイント98ポイント  (5子コメント)

Everytime you see a safety sign and think "What sort of fucktard needs to be told that?" remember there was someone that needed to be told and wasn't.

[–]Ffdmatt 35ポイント36ポイント  (0子コメント)

Next time you're near a medical office, look at the white boxes outside of them. They literally ALL say "NO DRUGS OR MONEY KEPT IN BOX - BLOOD AND URINE SPECIMENS ONLY"

Imagine being the one to find THAT out the hard way.

[–]MikeTaylorPhoto 124ポイント125ポイント  (12子コメント)

And some of the worst sentence structures I've ever read.

[–]Kwerti 63ポイント64ポイント  (4子コメント)

Could have been written way better, something more like this.

My favorite example was in WW1/WW2. After a plane returned from battle, the engineers added armor to the parts of the plane that were undamaged, instead of the locations where bullets penetrated the plane. They determined that other planes hit in the 'undamaged' spots were more likely to fatally crash, and therefore would not make it back to the hangar.

[–]Zedwimer 27ポイント28ポイント  (1子コメント)

Thank you for this. I re-read the original several times and still wasn't sure I got it.

[–]tim466 13ポイント14ポイント  (2子コメント)

In your first sentence you say they first only added armor to the places where there were no bullet holes. but isn't that the right conclusion to draw as the planes that were hit at those places didn't return?

[–]Reutan 24ポイント25ポイント  (0子コメント)

It's not clear, but that was they were trying to emphasize.

[–]eden_of_chaos 20ポイント21ポイント  (8子コメント)

This is how most people think, sadly. They don't see the full picture, only the small bit out of context.

[–]blondeandtall 282ポイント283ポイント  (120子コメント)

Yup. I had a great professor in grad school who would take the data and prove something like "women earn less than men." then he would take the same set of data and prove that "women earn more than men." it was pretty eye opening

[–]gar37bic 98ポイント99ポイント  (13子コメント)

"There are three kinds of lies in this world. Lies, Damn Lies, and Statistics" - Mark Twain

[–]QuantumDisruption 11ポイント12ポイント  (12子コメント)

I just took stats. It was half eye-opening and half confusing as fuck. I think I might have had a terrible professor (class average going into the final was 58%) but hypothesis testing was the death of me.

[–]DR_Mant1s_Toboggan 23ポイント24ポイント  (4子コメント)

Everyone thinks their stats professor is bad. Yours might have been, but stats IS tough to get the hang of. Source: I'm a TA for an intro stats class

[–]TheDrySkinOnYourKnee 12ポイント13ポイント  (3子コメント)

"Figures can lie, and liars can figure"

[–]ZeroHex 17ポイント18ポイント  (1子コメント)

It's supposed to be "figures don't lie, but liars can figure"

Data is data is data, getting 10 yes responses and 4 no responses is what happened. Why those responses were given may be because the question is worded in a certain way, or the poll was given in a context that pushed participants towards or away from one of the responses.

[–]TheDrySkinOnYourKnee 3ポイント4ポイント  (0子コメント)

Yeah that makes much more sense haha, thanks.

[–]ePants 4ポイント5ポイント  (18子コメント)

That's why you should double major in statistics and marketing.

[–]petrichorE6 198ポイント199ポイント  (120子コメント)

So calculess, statistics more.

[–]emoposer 140ポイント141ポイント  (31子コメント)

Calculus is very important but it's range of uses has a smaller limit.

[–]PM_ME_YOR_PANTIES 138ポイント139ポイント  (28子コメント)

Calculus is an integral part of some situations but most of the time it's a tangent.

[–]emoposer 66ポイント67ポイント  (24子コメント)

Agreed, I think it's a sin that something should be done. Our educational scope is too linear.

[–]Nevuary 30ポイント31ポイント  (21子コメント)

Some may not be able to differentiate between inclining and declining events

[–]emoposer 19ポイント20ポイント  (19子コメント)

True, people seem to be on a strange arc. I can keep this going for limx->∞ X3 -100x

[–]admiraljustin 9ポイント10ポイント  (1子コメント)

Realistically you can only keep it going while t <= (your lifetime) but I get the area you're coming from.

[–]emoposer 3ポイント4ポイント  (0子コメント)

Nah, I'll just commission an algorithm to be made with my consciousness to keep making puns.

[–]TheGreat_Danton 24ポイント25ポイント  (5子コメント)

stats needs calc once you move past introductory courses. this would also help with the "when am I ever going to use this in real life"

[–]donjulioanejo 17ポイント18ポイント  (3子コメント)

Introductory stats courses are more than enough to help people better judge their daily activities.

[–]Crixomix 78ポイント79ポイント  (75子コメント)

As a highschool math teacher, yeah, I would much rather have all my students take a basic probability & stats course than calculus. Calc is super useful IF you need it. But apart from the problem solving & critical thinking inherent in learning math, it's not valuable to most of the workforce. Whereas the lessons learned in prob&stats are useful to your whole life.

[–]Roflkopt3r 41ポイント42ポイント  (20子コメント)

I've followed all these debates about what we should focus on in education for a long time, and I agree that we should avoid teaching so extremely many specific techniques and instead should focus on broader understanding.

But the way statistics is treated in academia sadly doesn't really accomplish that. In the majority of courses there is not much understanding involved. It's a lot of "here's a formula and a couple technical terms" and nothing beyond that. I often get the feeling that the lecturers never learned to explain that either. Why is standard deviation the way it is? To most, there is no explanation, they are merely given a formula to memorise. That doesn't teach them anything for the long run. Formula goes in, test is written, formula is forgotten.

Weirdly, I've heard some philosophers (who usually suck at that sort of advice) make a much better point. And that is to put the core focus on communication and comprehension. A huge part of the daily struggles in education is that the students neither understand what is presented to them, nor can formulate what they do not understand. It's the communication skills that are lacking to advance any further. So from there on they cling to the portions that are easy to memorise without understanding their meaning, or they keep asking around/googling until they find an explanation that makes sense to them because they couldn't comprehend the original source.

Other than that, all subjects should look to develop a much stronger reference to practical application. We can all learn addition and subtraction because it's presented to us in a way that we can practically relate to. Higher maths like calculus suddenly becomes a lot more comprehensible as well when connected to something everyone can relate to, such as the relation of position, speed, and acceleration. But when it's just some garbled salad of variables and numbers with no meaning attached, only there to learn the techniques of calculus, nothing sticks with the students and is a largely wasted effort.

[–]mmhrar 27ポイント28ポイント  (4子コメント)

Yea...

I had been using vectors for months before I finally 'understood' the difference between a point and a vector.

It never made sense to me, why does it have a magnitude, it's just a coordinate, like a point!

Then one day when my teacher was explaining how to use a vector for something, he did what no one had ever done before for me. He drew a fucking line from the point to the origin.

It was then that it clicked for me, by saying that a coordinate is a vector you're implying that it has an origin. Most people just always assume a 0,0 origin!

A coordinate is simply a position if you mean it to represent a point, or it's a vector if you mean it to represent an offset from some position!

After that, it was like a waterfall of understanding about everything I was doing flooded down and everything made perfect sense.

Having an understanding of what you're doing is so critical to having a strong grasp on math, but a lot of people forget the simple assumptions they have and some students might not even realize what to ask or what aspects of the situation they lack an understanding of.

Math teachers seem to love talking to students like their talking to colleagues about things.

[–]Cezoone 4ポイント5ポイント  (0子コメント)

We really neglect linear algebra, and I think it's a real shame.

[–]RexFox 5ポイント6ポイント  (4子コメント)

I always felt that math was taught with the wrong emphasis. I was told to memorize all these terms and formulas but my teachers never really could explain why they were important. It wasn't until i watched this video on mechanical fire control computers that any of it made sense. I feel like the way math is taught is by presenting puzzle pieces one by one rather than getting to look at the picture on the box first.

[–]warpspeed100 25ポイント26ポイント  (6子コメント)

But Calculus is essential if you want to teach about continuous distributions. Not even just that, pretty much anything non-discrete in statistics and probability requires calculus.

[–]Crixomix 10ポイント11ポイント  (3子コメント)

Most of the meat of understanding prob & stats requires no calc. The advanced calculations of continuous distributions? Sure, that needs calc. But you can understand most of stats without actually knowing how to calculate a continuous distribution. I learned all kinds of useful things in my AP stats class and we did absolutely zero calculus.

[–]K3wp 9ポイント10ポイント  (2子コメント)

As a computer science drop-out, this a thousand times.

Probability, stats and logic are orders-of-magnitude more relevant to today's workforce. But we have students that have suffered through years of advanced math, yet can't understand basic boolean logic.

[–]CodeMonkey24 45ポイント46ポイント  (5子コメント)

My university professor started our first stats class by saying "Welcome to sadistics 2306".

[–]skintigh 7ポイント8ポイント  (3子コメント)

Sounds about right. I took 5 calc classes and did great. I took one graduate probabilities class and had my ass handed to me.

[–]Make_7_up_YOURS 37ポイント38ポイント  (17子コメント)

Calc teacher here. 80 percent of my students will never use anything that I've taught them.

Now my physics students, on the other hand.... everyone who ever drives a car should take at least one physics class.

[–]gamma55 22ポイント23ポイント  (1子コメント)

What? Drivers already have to obey traffic laws, you making us having to obey laws of physics as well? Reeks of tooting your own horn, Mr. Physics-man.

[–]YoungXanto 24ポイント25ポイント  (8子コメント)

If you want to understand statistics beyond any senior level statistics class in college, you'll still need a firm grasp of calculus.

[–]WhatInYourPants 17ポイント18ポイント  (11子コメント)

My psych degree was pretty stats heavy. I kind of expected lots of sitting around listening to a professor with a long beard and a pipe talk all day but instead it was all this science shit, like day in day out just science all the time. It's nothing like what psychologists do in the movies.

[–]Nextian_Geometry 16ポイント17ポイント  (3子コメント)

Couldn't agree more. I'm a former math teacher and a current stats grad student. I was dismayed to learn how little practical math was included in the curriculum I taught. Unfortunately I couldn't go off on my own and teach what I thought was important because my kids would be tested over a ridiculous amount of content at the end of the year whether I thought that content mattered or not. My job depended on my test scores too

[–]trippyhippie94 14ポイント15ポイント  (1子コメント)

And welcome to modern education, that all that matters are test scores and how well students can regurgitate what they've been taught without understanding the process of why.

[–]Valdrax 60ポイント61ポイント  (56子コメント)

Maybe I'm biased by having had a calculus-based statistics class, but what would you actually teach in a statistics class that didn't assume a calculus background?

[–]emoposer 89ポイント90ポイント  (31子コメント)

For sure, for introductory level statistics classes basic algebra is sufficient.

[–]rtomek 6ポイント7ポイント  (3子コメント)

In high school we had a one-semester stats class that was optional. It was mostly combinations and permutations from what I remember. We did learn about gaussians and used lookup tables based on how many standard deviations from the mean something was.

When I retook statistics and leaned that you calculate the cdf using the integral of the pdf my mind was blown.

[–]DragonMeme 5ポイント6ポイント  (0子コメント)

Conceptual statistics (different types of biases, how to design/recognize good surveys, etc) is incredibly useful for non-math people. You don't need to understand the math in order to critically evaluate the polls and surveys of our day to day lives.

[–]YoungXanto 7ポイント8ポイント  (5子コメント)

Any applied course that teaches basic hypothesis testing may not delve too far into the calculus that you need to actually understand probability distribution functions. The stat courses required for tracks like psychology are most likely to follow this approach. Basically they teach students how to use Minitab (ugh) in order to generate p-values as that is practical in their research. But they may not actually thoroughly explain all of the underlying theory.

[–]Purrrkins 14ポイント15ポイント  (3子コメント)

Given the choice between calculus and statistics, I'm sure most people would pick statistics. Unfortunately, calculus is required for those who won't use it ever again, and statistics is just viewed as a math elective.

[–]edgar3981C 7ポイント8ポイント  (1子コメント)

Plus human irrationality is hardwired and 95% of people, myself included, don't exactly kill themselves to pay attention in high school math.

[–]black_flag_4ever 1302ポイント1303ポイント  (457子コメント)

Despite the stats I still get a lotto ticket when the jackpot is really high. I know I'll likely never win and have a greater chance of getting killed by a shark that shoots lasers out of its eyes, but it's just a dollar.

[–]narky1 1205ポイント1206ポイント  (244子コメント)

The utility I get from thinking about winning is worth more than the cost of the ticket at times. At such times its a worthwhile investment.

[–]YoungXanto 649ポイント650ポイント  (180子コメント)

Agreed. I have a Master's Degree in Statistics. In theory this means that I have some basic understanding of probability; however, I still buy powerball tickets when the jackpot gets super high because the few bucks that I throw away on a ticket provides me days worth of entertainment value. I've certainly blown a lot more money on a lot more stupid things in my lifetime

[–]Cousy 370ポイント371ポイント  (66子コメント)

There are doctor's who refuse to quit smoking. There is something very human about deciding to do something that you know with certainty is the bad long-term choice for the sake of short-term satisfaction.

[–]YoungXanto 325ポイント326ポイント  (38子コメント)

Damn humans. If everyone just behaved logically my predictive models would be much more accurate!

[–]NoReligionPlz 109ポイント110ポイント  (24子コメント)

If everyone just behaved logically

We would all be Vulcans...

[–]rslashPolandball 53ポイント54ポイント  (22子コメント)

Vulcans? Sweet! I get to have way more sex!

[–]celas001 26ポイント27ポイント  (19子コメント)

They only mate once every few years, man. Unless they meet Kirk or Tucker, of course.

[–]mdothier 95ポイント96ポイント  (4子コメント)

Maybe that once every few years is more than he's currently getting

[–]BardivanGeeves 14ポイント15ポイント  (0子コメント)

"For you thats much less, for me Much Much more" -comicbook guy

[–]Crysar 20ポイント21ポイント  (0子コメント)

A roast of game theory. I like it.

[–]Dragofireheart 9ポイント10ポイント  (3子コメント)

Death is certain. It's a balance of longevity and quality of life. What good is living a life that you don't enjoy?

[–]Boony52 3ポイント4ポイント  (1子コメント)

Yeah, but doctors should understand that smoking has high chances of not only shortening your life but actually significantly reducing your quality of life as you age.

Smoking reduces your lung function at a faster rate than a non smoker. Thus as a smoker ages, their ability to perform physical task is reduced faster. No being able to perform basic physical activities has a huge impact on your quality of life.

TLDR: smoking significantly reduces your quality of life when you are older.

[–]coordi 5ポイント6ポイント  (0子コメント)

You do something for short term satisfaction long enough it becomes long term satisfaction.

[–]coffee_and_lumber 16ポイント17ポイント  (2子コメント)

Heh, I always remember the pile of 20's I need to bring to even local street festivals so I can overpay for beers and snacks and how much needless cost that is. What's a few bucks here and there for a lotto ticket?

[–]All_Work_All_Play 22ポイント23ポイント  (48子コメント)

Interestingly enough, if you read Thinking Fast and Slow, they cite a number of informal situations where even well versed stats people (profs and researches) had a hard time applying what they knew/taught to practical everyday problems. The Linda Problem is easy once you think about it with statistics, but we tend to have a hard time recognizing those general types in the real world. As with everything else, it's the application of knowledge that's important, but it seems like stats is harder to spot for most (mostly because our brains love having a coherent story and like to jump to conclusions).

[–]techinept 26ポイント27ポイント  (10子コメント)

I just smashed the Linda problem in 3 seconds but maybe I got it right because I knew it was a logic test or whatever so I don't know if I'm extraordinary or just got lucky and I even intuitively reasoned the correct answer due to the exact reasons the solution gave overall I am very pleased by this self affirming test because previously today somebody called me fat.

[–]skellera 9ポイント10ポイント  (0子コメント)

You went on a page called "Conjunction Fallacy." That alone would influence your answer enough to get it right.

[–]wordserious 12ポイント13ポイント  (14子コメント)

I think of it as a risk-analysis proposition. Risk is a vector with 2 diametrically opposed components: the probability that something will happen, and the outcome realized, when it does. For a large enough payoff, I'm willing to bet against my own 1 dollar.

[–]qubedView 37ポイント38ポイント  (13子コメント)

That was the conclusion I got when interning at an advertising firm with a major lottery client. We went around interviewing people about if/why they play the lottery.

You go to the rich parts of town and you'll find no one who plays the lottery. They already lead cushy lives and the investment vs payout for the lottery makes no sense to them.

Then we go to the poorer parts of the city, and I was shocked how almost everyone we talked to played. And after talking to them, I started to get why. They didn't live cushy lives. Their lives were in the shitter and they had no opportunities open to them. Hope for the future just wasn't there. Life was shit and always would be shit for as far as they could see. But when they bought that ticket, that was a ray of sunshine for them. They got to dream about a comfortable life, no matter how unlikely it was. 1 in 100,000,000 is still better odds than they had before.

[–]riskhunter99 15ポイント16ポイント  (1子コメント)

I play the lottery so i can experience how it is to be poor for a day. Then after I don't win i go back to my yacht and adjust my monocle.

[–]MagnusBruce 3ポイント4ポイント  (2子コメント)

Indeed. On the rare times I buy a ticket I'm buying a bit of excitement and the possibility of one of the smaller prizes (a few hundred or even thousand pounds wouldn't be unappreciated!).

I think I've spent like £10 on buying lottery tickets in my life though, so it really is very rare that I take part.

[–]techinept 2ポイント3ポイント  (1子コメント)

Give me $$$ and I may or may not set up a big surprise tomorrow, please?

[–]jago81 15ポイント16ポイント  (1子コメント)

It is just a dollar or two. The problem lies with the ones who buy 50 tickets. Per week.

I once heard someone say "Well, I buy a lot of tickets because I always win a few bucks here and there at least".

What the fuck does that even mean? People are bad with money.

[–]gtmog 10ポイント11ポイント  (2子コメント)

I threw in a couple bucks into the office lotto pool as a form of insurance. If everyone else won and quit, I'd be up shit creek.

[–]monstrinhotron 6ポイント7ポイント  (1子コメント)

that fear of being the only one that didn't win would motivate me more than the hope of winning at all.

[–]jd112358 22ポイント23ポイント  (6子コメント)

I only buy lottery tickets when there is an office pool. I don't expect to win, but it's like insurance. If by some chance the dumbest guy in the office becomes set for life, and I don't, I would never be able to live with myself. It's worth the few dollars to know that it won't happen.

[–]eseern 9ポイント10ポイント  (3子コメント)

and have a greater chance of getting killed by a shark that shoots lasers out of its eyes

I mean, only if you live by the ocean...

[–]Purrrkins 38ポイント39ポイント  (26子コメント)

Some people buy tickets for the fun of it, but unfortunately most people don't

[–]BBEnterprises 31ポイント32ポイント  (17子コメント)

Yep, when I worked behind a counter selling them years ago most of the tickets sold went to compulsive gamblers who would buy rolls at a time, or buy several, scratch them all right then and there and buy more with whatever winnings they got.

I'm glad some people can have fun with it, but the government absolutely shouldn't be exploiting addiction to make money.

[–]screennameoutoforder 11ポイント12ポイント  (7子コメント)

NY scratchoff tix have the phone number to a gambling addiction hotline printed on the back. Don't know if that's helped even a single person. Maybe it was just to ease someone's conscience.

[–]King_Charles_II 2ポイント3ポイント  (4子コメント)

Maybe it's a legal requirement or something, like the health warnings on cigs. Like they actually want to put that stuff on their packaging.

[–]screennameoutoforder 2ポイント3ポイント  (1子コメント)

Cigarette co's had to be sued a lot before they agreed to the warnings. Haven't heard about a lottery getting sued, and I don't want to Google it.

I prefer to think of it as a single rheumy old man with a wispy white wreath of hair around a large bald spot. He's up in an attic somewhere with good light and exposed rafters.

Someone bangs on the door and opens a few bolts, says "Gramps, we need another couple new themes. Try something Disney maybe."

And Gramps goes to his drafting table, shaky and begging God for forgiveness at what he is about to do. He draws up a new design for an instant lottery ticket that will pull in more suckers with a dream but no hope. And then he writes that phone number on the back and prays that it helps someone.

[–]skylla05 5ポイント6ポイント  (3子コメント)

There was an elderly lady at the gas station last week that bought, no fucking shit, $250 worth of lottery tickets.

It's possible it was for her canasta group or something, but it was still crazy.

[–]flameofanor2142 7ポイント8ポイント  (2子コメント)

Dude, I get a lady in my store who drops $300 every week. I worked at a different store than usual, she goes in there on a different day of the week and drops another $100! It's fucking insane.

[–]Deto 50ポイント51ポイント  (4子コメント)

It's still a rational decision. The entertainment/excitement you get out of the experience is worth the money for you.

Economists always talk about people being irrational, but I think the failing of 'rationality' to predict behavior is just a failure to understand what exactly people optimize for and the inability to fit simplified models to the complex interactions that underscore our daily lives.

[–]Acrolith 30ポイント31ポイント  (1子コメント)

Economists understand this! Consumer preference is not something subject to naive logic, and economic models don't really try to predict or dispute them. Every consumer gets to decide how much something is worth to them, and that includes intangibles like "excitement thinking about the lottery", or even "good feeling I get from giving to charity".

Once your preferences are determined, though, economic principles still do apply. There's nothing weird about people buying lottery tickets even when it's a bad (monetary) investment, just like there's nothing weird about people giving to charities even though it's an even worse "investment" for them. In these cases, some or all of the value for the consumer is in the intangibles, the feeling they get or expect to get from their purchase or donation.

[–]nuisible 14ポイント15ポイント  (0子コメント)

Yeah, I have fun daydreaming of what I'd do with all that cash and to me it feels like less of a waste of time if i have a ticket.

[–]Pats_Bunny 3ポイント4ポイント  (2子コメント)

Basically, I pitch in when the office gets a pool going, cuz I'll be damned if I'm gonna be the guy showing up to an empty work place because I didn't want to put $10 in. Other than that, I never buy tickets.

[–]to_the_elbow 29ポイント30ポイント  (25子コメント)

There actually a mathematically appropriate time to buy a ticket. Looking at the Powerball lottery, assume the Jackpot is X. The Expected Value (EV) from buying a single lottery ticket is

EV = X(1/292201338) + 1000000(1/11688053.52) + 50000(1/913129.18) + 100(1/36525.17) + 100(1/14494.11) + 7(1/579.76) + 7(1/701.33) + 4(1/91.98) + 4*(1/38.32)

EV = X*(1/292201338) + 0.32

Since a ticket costs $2, you want to know when is EV > 2. That is when X > $491M. So when the Powerball lottery is over this amount you are statistically likely to make a profit on your ticket.

[–]Coach_GordonBombay 26ポイント27ポイント  (3子コメント)

Honey! We are selling the house! Powerball is at $492 Million and we are going all in!!

[–]sfx 37ポイント38ポイント  (12子コメント)

I don't think this takes into consideration the possibility of a split jackpot.

[–]RedditShadowBannedMe 24ポイント25ポイント  (8子コメント)

Also isn't taking into account the size of the actual payout, and the taxes you'll have to pay. I've heard you lose about half the money you think you'll win, so X is more likely close to $1B

[–]Icemasta 9ポイント10ポイント  (0子コメント)

This doesn't take into account the fact there are a lot more players playing during higher jackpots, therefore more potential to have to split the prize.

Since there is a direct link between prize pool and number of players, you have to devalue the prize pool.

[–]techiesgoboom 2ポイント3ポイント  (10子コメント)

It's kind of like (but not totally like) an economic version of Pascal's Wager. When the jackpot is high enough that you never have to worry about money again it's worth giving it a go.

[–]KnightDuty 5ポイント6ポイント  (4子コメント)

You can even make it sound worthwhile mathmatically if your phrase it correctly.

Your chances of legitimately winning without a ticket are 0%. So ANY probability of winning with a ticket, no mater how small, is INFINITELY better for just $1.

$1 is a small investment to raise your chances by an infinite amount.

[–]Rettet181 16ポイント17ポイント  (6子コメント)

The probability of winning the lottery is infinite times greater with 1 ticket then it is with 0. Buying a second (or hundreds more) is when it becomes a mistake.

[–]gar37bic 11ポイント12ポイント  (2子コメント)

You're also more likely to be killed by a meteorite.

(Law of large numbers - actuaries have computed that when a large meteor hits the Earth, so many people will be killed that it overwhelms the odds of almost every other event.)

[–]yes_its_him 440ポイント441ポイント  (62子コメント)

If you're stupid enough, it doesn't matter what classes you take.

[–]Rooonaldooo99 213ポイント214ポイント  (22子コメント)

Sorry, what's that? Can't hear you over the sounds of me smashing rocks together.

[–]Ameisen 15ポイント16ポイント  (6子コメント)

Ah, Material Science.

[–]Truan 4ポイント5ポイント  (0子コメント)

rock smash mean we invest in enron

enron good

yay for roonalooo

[–]harryrunes 36ポイント37ポイント  (13子コメント)

Thank you. I always feel like people underestimate the stubbornness and stupidity of people. Yes, everyone has the ability to learn just about anything, but that doesn't mean they want to put in the effort to do so.

Just offering the classes doesn't do anything for the majority of students. The under achievers won't take the classes or won't try, and the over achievers already seek out opportunities to learn more advanced topics.

[–]DragonMeme 25ポイント26ポイント  (11子コメント)

Yeah, but in America, I don't think stupidity is our problem as much as our culture and our pretty bad k-12 education system. I don't know anywhere else in the civilized world that it's seen as acceptable to say "I just can't do math".

[–]getfuckingreal 645ポイント646ポイント  (124子コメント)

I know this is a cartoon but if people stopped maxing out credit cards, defaulting on debts, buying lottery tickets and generally were more responsible with their spending the economy would be better off because those resources would go to a more productive use. How does buying lottery tickets (which goes to the state government) keep the economy moving?

https://en.wikipedia.org/wiki/Parable_of_the_broken_window

[–]Sumner67 260ポイント261ポイント  (18子コメント)

that's the inside joke on this cartoon. It isn't about not knowing math, it's demonstrating how dumb people have become about economics in general.

rimshot.

[–]hive_worker 179ポイント180ポイント  (10子コメント)

I have a suspicion the comic creator wasn't in on that part of the joke.

[–]Hattless 111ポイント112ポイント  (0子コメント)

It's SMBC. They take shots at economists all the time.

[–]PM_ME_UR_OBSIDIAN 33ポイント34ポイント  (7子コメント)

Zach Weinersmith is actually a brilliant guy, I don't know too much about economics but his comments on science and engineering are usually on-point.

[–]50Olol5 15ポイント16ポイント  (5子コメント)

If people were more logical, then the study of economics would just be the study of a broad range of maths/statistics concepts grouped together. The social science aspect of economics is very important.

[–]ZombieAlpacaLips 9ポイント10ポイント  (2子コメント)

If all we had to do to get rich was spend money, I'd be getting richer every year!

[–]Western_Promises 39ポイント40ポイント  (15子コメント)

Eh, there's a sliver of truth in here. They say one reason Japan's stagnating is because people are buying too little and saving too much.

[–]onewhitelight 27ポイント28ポイント  (3子コメント)

Japans issues are more cultural and population based. Theyve not had the birth rate to sustain their population for some time, thus their economy has a large age imbalance.

[–]TSPhoenix 12ポイント13ポイント  (0子コメント)

The entire workplace culture is largely responsible. People working absurdly long hours with no productivity gains to show for it. Tiredness being a badge of honor/loyalty to your work. Doing manually many jobs that are the work of PCs in other places in the world. This of course all effects spending habits and lifestyle choices.

[–]mubatt 141ポイント142ポイント  (42子コメント)

Differential equations didn't teach me anything about calculating interest investment. It only taught me how to calculate the movement of a function. I feel like the author and I have very different understandings of Differential Equations.

edit: Engineering Economics taught me how to calculate interest investments. We didn't use any of the materials covered in DiffEq to solve these problems. Albeit the variables categorically provided may have been solved via DiffEq, therefore backing OPs comic in terms of proof rather than application.

[–]bjt23 98ポイント99ポイント  (9子コメント)

Sharon has $7000 in credit card debt. Sharon must either take a second job at the Diffy Q factory or prostitute herself out to make ends meet. The entry question to the factory is: find the Laplace transform of f(t)=3sin2t-4t+5e3t.

Bam, an investment problem!

[–]ffn 26ポイント27ポイント  (2子コメント)

A finance guy would probably approximate the answer using a single factor model:

f(t) = At + B + e

If they're really fancy, they'd use a multifactor model.

Source: I work in finance.

[–]flexmuzik 6ポイント7ポイント  (0子コメント)

Correction: the finance guy wouldn't know what a Laplace transform is.

[–]TheMagicJesus 3ポイント4ポイント  (1子コメント)

I consider myself intelligent but after having not done anything related to sin or cosin in like five years I have no idea how you could possibly remember how to do it. I barely remember specifics of vacations I took five years ago much less a math lesson

[–]notadoctor123 28ポイント29ポイント  (14子コメント)

When the rate of change of something is proportional to the current value of that something, it grows exponentially. Interest is proportional to the current principal of the debt, and so it grows exponentially (albeit discretely rather than continuously). This was the first ODE we solved in my first DEs class.

[–]BearlyBreathing 14ポイント15ポイント  (4子コメント)

Continuous interest is a thing, yes? I have a vague recollection of having to learn e for this specific purpose.

[–]notadoctor123 2ポイント3ポイント  (0子コメント)

Yup! If you compound interest daily, it will approximate continuous interest given by f (t)=et f (0) fairly well.

[–]TheMacMan 16ポイント17ポイント  (4子コメント)

Read Rationally Irrational. It's very interesting to see how normal economics is a belief that we act rationally but behavioral economics looks at how we actually act. Taking the quick pay outs in life when the long term would be much much more profitable and psychologically rewarding.

Dan presents numerous studies and examples he and other researchers have undertaken to show that we're far from rational even when educated and it's in our best interest.

[–]Carnage5669 14ポイント15ポイント  (1子コメント)

This humor is dryer than Death Valley at the moment.

[–]gar37bic 29ポイント30ポイント  (8子コメント)

One thing from physics that can and should be taught early - decomposition (correct term?) - the idea that an event or a process can be separated into pieces. For example, in sailing we learn that the boat's motion is a result of the force of the water and the force of the air, and the force of the air can be separated into the part that moves the boat forward and the part that tilts the boat over. That's not the best example for a third grader, but there are others - wind on a ball rolling downhill. This is a conceptual leap that makes a lot of other things much easier to figure out.

[–]redsoxman17 20ポイント21ポイント  (0子コメント)

I don't know the proper term either, but you are very correct.

I remember in my physics class in high school we did a problem to calculate the velocity (magnitude and direction) of a boat necessary for there to be zero wind on the deck (so you can play cards and stuff like that).

You have 3 major components:

  1. The velocity of the boat.
  2. The velocity of the water under the boat.
  3. The velocity of the air around the boat.

If you try to tackle all three elements at once you will get a major headache. But when you break it down to three individual vectors which directly sum (keeping in mind that vectors in the opposite direction subtract) it is actually an relatively easy problem.

[–]CopOnTheRun 16ポイント17ポイント  (1子コメント)

You're thinking of the superposition principle, it's very useful in that you can break down complicated problems into smaller parts. Just be ready to do some vector addition!

[–]Suckydog 9ポイント10ポイント  (2子コメント)

OK, I've never thought these are funny, but is this one purposely not being funny?

[–]ggill1313 46ポイント47ポイント  (10子コメント)

My goodness I can't stand how pretentious this comic always comes across. It has an air of superiority in so many of them.

[–]herbinlegend 48ポイント49ポイント  (3子コメント)

The funniest part is the idea of somebody believing our economic growth is driven by outstanding credit card debt, lottery ticket profits, and useless products....

[–]Gouttdor 4ポイント5ポイント  (0子コメント)

They are pockets of potential growth we are consuming. By lowering interest rates we are allowing people to borrow more, which us reflected in the higher RE prices. That extra "money" is either saved or spend. Also paper increases in equity create a wealth effect which makes people spend more and save less.

Of course once this is consumed we need to look for growth somewhere else. There lies the rub.

[–]joeumlo 60ポイント61ポイント  (33子コメント)

I hold a degree in math... what does diff EQ have to do with interest? It's just an exponential function. Also, I'm not sure it applies to investment banking either

[–]geniel1 27ポイント28ポイント  (11子コメント)

Perhaps we should teach OP economics instead. The economy wouldn't tank if people stopped spending money on what some consider to be frivolous items.

[–]cakeisnolie1 21ポイント22ポイント  (5子コメント)

Right... America exists because people are bad at math. Got it.

[–]thewander_lust 9ポイント10ポイント  (0子コメント)

I do not like this one bit. If that makes me a humorless dick ... fine.

[–]SimplyShredded 148ポイント149ポイント  (68子コメント)

r/iamverysmart

You think those big time Dr's/Accountants/Lawyers aren't spending money on frivolous things? I mean hell, the entire luxury car industry is convincing incredibly intelligent and successful individuals that they need to spend 10x more on a car that will cost 20x more in repairs than your perfectly fine Honda Accord or Toyota Camry.

Don't even get me started on the $2,500 bottles of wine that have failed in blind taste tests done by real judges, to a $19 bottle from publix.

Interesting side note: the wine industry doesn't allow consumer behaviorists to conduct significant research on blind taste testing because they know wine doesn't really change after a certain point. In a study, a group of researchers submitted a wine under 3 different labels to a tasting competition. 2 of them lost and were rated undrinkable and very meh, the other took home the #1 spot. All the same judges judged those wines.

edit: lawyers are obviously the profession with one of the greatest handles on logic and many types of lawyers require a strong handle on math. Anything involving any type of finance, realestate, etc. Please stop pming me lawyers don't know how to do math...

[–]MechanicalEngineEar 66ポイント67ポイント  (26子コメント)

In regard to those luxury cars, I was a design engineer for Honda and worked on both the civic and NSX along with other models. The extra money spent on the more expensive cars goes into more expensive things which you might not appreciate or care about, but that doesn't mean they are worthless. Noise is one of the most obvious differences in a cheap vs luxury car. Most people avoid noticing by just turning up their radio to drown out road noise, but in a luxury car, you don't have to hide the road noise with louder music.

Also, the features that you think are good enough and are on economy cars weren't too long ago only available on luxury cars. Being the first to get something will always cost more, and if you have the money to not have to wait for something you want, what is the problem? Air conditioning used to be a luxury. Ice for cooling down drinks used to be a luxury. Your shoes would be considered excess luxury in a 3rd world country, but you feel they are worth what they cost you.

[–]Vanabrus 34ポイント35ポイント  (16子コメント)

You think those big time Dr's/Accountants/Lawyers aren't spending money on frivolous things?

The difference is to those Dr's/Accountants/Lawyers that frivolous spending has no bearing on their lifestyle. Whereas someone who is poor and wasting their money on lottery tickets is almost always better off having put that money away for something else later.

In other words, rich people wasting money means nothing; they're not going to worry about paying rent, food, utilities, etc. The same isn't true of the poor.

[–]constantino2 3ポイント4ポイント  (3子コメント)

advanced math is widely offered in HS.

Ignorance is a choice.

[–]chicklet2011 4ポイント5ポイント  (6子コメント)

I took Formal Logic last semester, and it blew my mind. I love it. Learning how to make statements that sound like "Elephants are the best animals because they are big, and all big things are huge and all huge things are best, and no mice are big, and some mice are small, but only if they're more than 200 miles away from and papaya, and racecars exist." and then making them into logically airtight expressions was seriously enthralling.

[–]JohnnyComeLater 39ポイント40ポイント  (7子コメント)

How is this funny?

[–]mungis 4ポイント5ポイント  (0子コメント)

You're on /r/funny it's not supposed to be.

[–]Grand_Admiral_D 10ポイント11ポイント  (2子コメント)

This comic is not good at all and I don't know why people keep posting it. It's not smart, it is not funny. I just don't get it.

[–]MrWeinerSMBC[S] 77ポイント78ポイント  (23子コメント)

This is why China will never overtake us.

http://www.smbc-comics.com/index.php?id=4150

[–]n_reineke 31ポイント32ポイント  (5子コメント)

I dunno, they buy some dumb shit over there too.

[–]TheGreenJedi 11ポイント12ポイント  (0子コメント)

They make dumb shit, buy dumb shit, and treat the their own semi-rigged stock market exactly the same as a poker table.

Also they get conned into real-estate scams of empty ghost cities that look great on paper but are useless since no one lives there

[–]johnvandyke2 14ポイント15ポイント  (1子コメント)

This comic is just savvy enough in college level math and just ignorant enough in any understanding of how the economy works to be a hit on Reddit.

[–]JustmeWRX 3ポイント4ポイント  (1子コメント)

We do teach math and higher level math in our school system. Parents try to bail out their kids by blaming the schooling in the USA. Math hasn't gone anywhere, and a normal person's ability to understand math correlates directly with their ability to sit down and work through the problems. A lot of redditors and face book masters try to take the stance that it is the schools that have failed, or the teachers that have failed. Many of these people complaining have never taken a calculus class because they were just "never good at math". You try to encourage them and they say "math isn't my thing" or "I could never understand it". But they have time to complain about how it's taught.