Humans Hard-wired for Geometry 235
hcg50a writes "An article on MSNBC reports that, according to a new study, even if you never learned the difference between a triangle, a rectangle and a trapezoid, and you never used a ruler, a compass or a map, you would still do well on some basic geometry tests, because we are hard-wired for geometry, rather than learning it from teachers or cultural influences."
Now I understand why... (Score:5, Funny)
Re:Now I understand why... (Score:2, Funny)
[ God, I feel old - I just looked up the faculty list and he's STILL THERE! ]
3D world (Score:4, Insightful)
Re:3D world (Score:3, Insightful)
Re:3D world (Score:2)
Re:3D world (Score:3, Funny)
Um...if you have a brain of your own (borrow one if you don't) you could try this out for yourself. It's not exactly some obscure experiment that you can only "read about".
Re:3D world (Score:2)
Re:3D world (Score:2)
Re:3D world (Score:2)
Let me guess. You heard a few anecdotes about people who can think and now you assume that just about anyone can do it.
Re:Yes (Score:2, Funny)
Kierthos
Re:That's not a two-dimensional problem (Score:2)
Re:Signal to noise (Score:3, Funny)
That's nothing. We're hardwired for calculus. (Score:5, Insightful)
Re:That's nothing. We're hardwired for calculus. (Score:2)
Re:That's nothing. We're hardwired for calculus. (Score:5, Insightful)
That's geometry, and a practical application of it. You wouldn't think about it for too long before coming up with the method of how to accomplish that, either.
Meanwhile, mental "calculus" (the observation of the rates of change of things) and metal "statistics" (the counting of how many times something is going to happen a certain way across repeated attempts) are usually something we can't quite quantify. We do these things automatically, but we can't put them on paper so easily. Geometry, however, works on a sheet of paper, and can be demonstrated there. Notice how all math homework is numbers and letters and symbols except in geometry, where you draw pictures, using the numbers/letters/symbols only to annotate what is going on in those diagrams.
It's not the calculations or even the practical application that sets Geometry apart. It's the fact that we can easily record what's going on in our minds and reuse that recorded information quickly and easily, without having to dredge the rules up from our memories.
Re:That's nothing. We're hardwired for calculus. (Score:2)
Re:That's nothing. We're hardwired for calculus. (Score:3, Insightful)
Re:That's nothing. We're hardwired for calculus. (Score:2)
Basically, what the article's saying is that the branch of geometry that deals with the world as our brain perceives it is hardwired into our brain. There's a reason geometry
Re:That's nothing. We're hardwired for calculus. (Score:3, Funny)
Sounds overly complicated to me - I'd just cut it corner to opposite corner.
Re:That's nothing. We're hardwired for calculus. (Score:3, Insightful)
Re:That's nothing. We're hardwired for calculus. (Score:2, Funny)
Re:That's nothing. We're hardwired for calculus. (Score:2, Insightful)
Re:That's nothing. We're hardwired for calculus. (Score:2)
I don't think anyone is consciously doing algebra in their imagination when they throw a ball (for that matter, I think dogs are hardly conscious, even though I am a dog person). However, the nuerons in the brain, spinal cord, and arm probably are doing calculus.
Remember that the body'
Re:That's nothing. We're hardwired for calculus. (Score:2)
Past experience? I don't think that a labrat knows a thing about physics or circuitry design, but if every time he hits the button he gets knocked across the room, he'll quickly learn to not hit the button.
We've got much bigger and more powerful brains so we're more capable of "just understanding" stuff from past experience. I still remember learning how to throw a football, purely from experience of what works vs what didn't. I didn't know why
Re:That's nothing. We're hardwired for calculus. (Score:2)
That's the problem with the labratory-oriented experiment. The idea of the lab is to get rid of all variables except one. In the real world where this organism evolved, they will never have the same experience twice -- there are many variables, and they are all different! Once you get eaten, you're don
Re:They're not using calculations, no. (Score:3, Interesting)
Except there is no "next time". You will never have to catch a ball with those exact same parameters again. Your body will be in a different position, the ball will be at a different speed, angle, and trajectory, different wind and environment conditions, etc.
"Think also about this: When you do
Re:They're not using calculations, no. (Score:3, Insightful)
In a sense, you are doing applied calculus when you react to stimuli in that way, but that's because change is a very easy thing for organisms to react to. You're not actually doing any math, but you are reacting to a situation that calculus can describe. It's like dropping something and knowing when it will land. You can usually guess pretty well when it
Re:They're not using calculations, no. (Score:2)
Most of our movement is hard-coded. It is not learned behavior. When we teach ourselves to throw a lay-up shot or throw a football, the conscious part of your brain is only doing very high-level stuff. When your body actually goes to move out these patterns, your using mus
Re:They're not using calculations, no. (Score:2)
If you look at gestation time compared to development time, you would see that, compared to other animals, humans should have a gestation time of about 2.5 - 3 years. Humans are all born as preemies, because otherwise their heads would be too big to get out. If humans h
Re:They're not using calculations, no. (Score:2)
Have you looked at any physiology or kinetics? You can't just talk about people *consciously* teaching themselves how to throw a ball, you have to look at *all organisms* moving their body.
A boy learning to throw a football is totally different than a toddler learning to walk. It's also totally different than learning to ride a bike.
" "Do
Re:That's nothing. We're hardwired for calculus. (Score:2)
Partial Differential Equations, too! (Score:2, Interesting)
Which makes me wonder: is math really that hard or is our notation making it more difficult than it really is?
Re:Partial Differential Equations, too! (Score:2)
While you can train yourself to control subconscious processes, I don't think math is one of them.
RoboCop is probably the only person who consciously does graduate level math in his head.
Re:Partial Differential Equations, too! (Score:2)
Re:Partial Differential Equations, too! (Score:2)
We can subconsciously solve graduate level mathematical problems every time we go up or down stairs.
Now apply that same subconcious "mathematics ability" to calculating an orbit.
We have sets of neurons which have been trained/structured to produce adequate approximate solutions to the stair-climbing problem, and we can also solve the same problem through a completely different process of mathematical symbol manipulation. The same symbol manipulation techniques can be applied to solve lots of radically
Re:Partial Differential Equations, too! (Score:5, Insightful)
Yee-haa, let's apply this epistemological principle elsewhere:
Birds fly -- they must be able to solve aerodynamical problems!
Acorns fall -- they must be able to solve second-order differential equations!
Water makes waves -- it must understand turbulent flow better than humans do!
Sheesh. Stop banging everything with your big Anthropomorphism Stick. Equations modeling some behavior are not 'understood' or 'solved' by whatever exhibits that behavior; the equations are just a model. Living being climbing steps or whatever are using highly-evolved real-time feedback mechanisms, not solving anything.
Re:Partial Differential Equations, too! (Score:3, Insightful)
It never ceases to amaze me how frequently even otherwise intelligent people confuse the map for the territory. Any abstract model you've ever conceived of or used is not reality. It is just a model that corresponds more or less well to reality. Please read and understand the parent post if you want to have any notion of how human knowledge differs from reality, and how human knowledge progre
Re:Partial Differential Equations, too! (Score:3, Insightful)
Wow! That sure would be a cutting criticism ... if I had said anything to the contrary. Remember, I'm answering someone who thinks climbing upstairs is equivalent to solving equations; if calling it a feedback mechanism gives him a little dose of enlightenment (because he's no longer anthropomorphising) so much the better. After he digests that, he'll be in a slightly better position to swallow your hard-core mechanist epistem
Re:That's nothing. We're hardwired for calculus. (Score:2)
But, on the other hand, many of us may have deep understanding in advanced maths. I guess it is literal meaning of "my maths only look good on paper"
Re:That's nothing. We're hardwired for calculus. (Score:2)
Re:That's nothing. We're hardwired for calculus. (Score:2)
I guess I have to disagree, to a certain extent. To get your, say, 150-pound body where it needs to be to catch a frisbee that's going to be there some seconds later, you've got to do a lot more than respond to a condition. You have to evaluate the de/acceleration, what gravity's doing, and take those changing velocities/vectors into a
Tell my teacher that, sheesh (Score:4, Funny)
Re:Tell my teacher that, sheesh (Score:2)
Re:Tell my teacher that, sheesh (Score:2)
Not Geometry, pattern recognition (Score:5, Insightful)
If they did this same test with the numbers "1" and "2" oriented in different directions, or in different sizes (with five 1's and only one 2) I think these tribal people would be just as good at finding the pattern, but that does not mean they know basic arabic numbers.
We've always known that the Human Brain is incredibly good at pattern recognition. This article, and this study, are full of crap.
Re:Not Geometry, pattern recognition (Score:2)
I agree. We learn the natural geometry of the world automatically. We also learn to recognize musical tunes. It's all in the learning mechanism. There is nothing hardwired about it. I have seen 4-year old kids who swear that the moon follows them as they walk. Sooner or later, they figure it out.
Re:Not Geometry, pattern recognition (Score:5, Interesting)
Agreed.
Actually, they've done previous studies on these people to investigate whether they had innate arithmetic abilities [sciencemag.org] by seeing if they could add large numbers, which they could only do approximately. As long as the numbers would fit on two hands, they were exact, but over that, not so much. It seems to me that the large number tests would just be comparing sizes of physical objects rather than actual math. (I don't think they gave them arabic numerals to add, but probably tick marks or other objects. It's just a guess: I don't know their exact methodology.)
What I find most revealing about this is their results on "handedness", which to me would help weed out pattern recognition versus spacial thinking (geometry). According to TFA, only 23% got it right... but 16% would get it right by guessing alone, so it's really not much better. Like the previous study, that seems to conflict with their conclusion rather than support it.
Re:Not Geometry, pattern recognition (Score:5, Insightful)
And what you probably read was only the article was on MSNBC for the average reader. It was published in Science, so maybe you should go and read the full article [nyud.net] before calling it pseudo-science.
Re:Not Geometry, pattern recognition (Score:2)
Some of them, especially the triangles (equilateral v/s isosceles) and the X's (perpendicular v/s otherwise) need the ability to think in terms of angles.
That's one way of thinking of it. But in all these examples you don't need to do any geometry, they're all just patterns. The X's example can be rotated in your head to compare them. The triangles can be rotated and reduced in size in your head. This doesn't have anything to do with geometry, but is just pattern matching.
Re:Not Geometry, pattern recognition (Score:2)
FYI my dictionary gives this for geometry:
the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.( pl. -tries)
a particular mathematical system describing such properties
Re:Not Geometry, pattern recognition (Score:2)
I'm not saying that there aren't some very neat aspects of our visual systems. I study visual systems. But this seems more like an artifact of visual systems than it does "knowledge of geometry".
Re:Not Geometry, pattern recognition (Score:2)
Re:Not Geometry, pattern recognition (Score:2)
But pattern recognition for two dimensional shapes requires an implicit understanding of angles. I think that the statement the ability of think in terms o
Re:Not Geometry, pattern recognition (Score:2)
As usual, Ring TFA helps here. The knee-jerk dissing of anthropologists of the kind demonstrated by some of my peer posts just makes them look like blowhards who didn't RTFA.
Re:Not Geometry, pattern recognition (Score:2)
Seems like a "non discovery" to me, really... (Score:4, Insightful)
The fact that adults tended to score better on these tests than kids did further illustrates this. The longer you've been around on this planet (formally educated or not), the more time you've had to work with objects and draw conclusions about what makes an object "different" from other similar ones.
Re:Seems like a "non discovery" to me, really... (Score:2)
Correlation is not causation. It seems that from this experiment you can't make a conclusion one way or the other. If this study *does not* show that we have an innate sense, that doesn't mean that it therefore must be learned. Say that in reality we do have an innate sense -- it just means
Re:Seems like a "non discovery" to me, really... (Score:2)
Right - this argument is known as "the poverty of the input." Basically you can conclude that a skill is at least partially innate if the sensory input the child has before acquiring the skill it is too small to have taught the child the skill from ground zero. This, for example, is why linguists and neurologist universally believe that human beings
re: possibilities (Score:2)
But as for the "impossible scenes" study, I'm lost as to how it means one can "reasonably conclude that the baabies had some innate sense of physics"? Even as young as 6 months to 12 months old, a child is already experiencing all sorts of basic laws of physics. Every time you dress them, for example, they're experiencing certain rules. (EG. They're unable to see their own skin through the material, and they can'
Scientific? (Score:3, Insightful)
Re:Scientific? (Score:2)
Or psychology ...
old news (Score:5, Informative)
Not that anyone except the five people that made it through the 'Transcendental Deduction' noticed, however.
Re:old news (Score:5, Informative)
Kant [wikipedia.org] died in 1804.
Re:old news (Score:4, Funny)
Re:old news (Score:2)
Re:old news (Score:2)
[Phil. major specialized in Kant, but mostly his ethics. Hume is the man w.r.t epistemology *grin*]
Re:old news (Score:3)
Seen in kids, too (Score:3, Insightful)
One example was a ball rolling down a ramp. About halfway down the ramp there was a small blind where the ball disappeared, but the ball never appeared on the other side of the ramp. This surprised the children and it surprised me that it surprised them so much.
I know kinetics and geometry are quite different, but apparently there is a lot we are "hard wired" for.
Re:Seen in kids, too (Score:3, Informative)
The really interesting thing that they're demonstrating is "Object Permenance" - Younger infants do not know that when an object leaves their point of view that it still exists! IIRC, they get that starting around 9 months. When it happens, it's sudden - one week the kid doesn't care, the next minute, "Huh?! Where'd it go?!" Even your attachment to your own mother wasn't there from the very start! You k
Then how the bloody hell... (Score:2)
Because.... (Score:2)
Re:Then how the bloody hell... (Score:2)
Seriously? Because you've not practiced enough, or you've never learned from a good player.
Conceptually, shooting an arrow is a pretty simple thing, but you need to work at it to become good. Same for pool.
Pool is one of those things with a lot of 'knack' to it, and a fair bit of non-obvious things -- like applied spin (top = follow, bottom = stop or roll back, left and right = redirect cue ball/object ball on impact) and knowing where the balls will end up. There's also a lot of te
Hardwired indeed (Score:3, Interesting)
All my life I found myself aggressive trying to find the most efficient geometry. Looking back, maybe I had some OCD that I never realized.
Wide aspect ratio TVs always made more sense to me than the squarish ones we used to use. The golden ratio [wikipedia.org] is for sure a mythical creature that proves that the ancients were just as bright as we are today, and that humans are locked in to geometric perfection.
Feng shui, symmetrical balance and all that garbage don't make me feel at ease -- geometric balance does.
I'm turning into Monk, aren't I?
You can't invent math. (Score:4, Insightful)
No, you rediscovered (independently) principles of calculus perhaps, but you did not invent it. You cannot invent calculus anymore than you can invent gravity or hydrogen -- they already exist, and are waiting to be discovered by the fertile human mind.
Re:You can't invent math. (Score:3, Informative)
You make a good point, but (Score:2)
This person "rediscovered" it in that sense, or merely "discovered" it in my assertion. In no sense was it invented, thus my original point is still valid.
Re:You can't invent math. (Score:3)
Re:You can't invent math. (Score:2)
You cannot invent calculus anymore than you can invent gravity or hydrogen
There are plenty of mathematicians who disagree with you, and plenty who agree with you as well. Your statement is a point of debate, not a fact.
Re:You can't invent math. (Score:2)
No, GP said 'I honestly believed I invented ...' and I take him at his word. Do you have reason to believe that he didn't believe that --
Re:Hardwired indeed (Score:2)
In my high school, the sophomore math class was geometry. We constructed shapes and did geometric proofs. A lot of people just couldn't get it. Some of them were vrey frustrated because they were really good at regular math, but they just weren't visual thinkers.
There were about 5 of us, including me, who were great at it. I remember one homework at the beginning
Re:Hardwired indeed (Score:2)
Kidding!
Re:Hardwired indeed (Score:2)
When you say you "aggressive"ly tried to find the most effecient geometry, and that you prefer ge
simple epistemology (Score:2)
How much learned (Score:2, Interesting)
My oldest is almost three, and youngest is one. If you roll a ball, not directly at her, she will walk directly at the ball, constantly changing her path to reflect the fact that the ball has moved as she is moving. The ball will get past her, and she will continue to go after it.
My almost three-year-old did the same thing at that age. Then,
Re:How much learned (Score:2)
Re:How much learned (Score:2)
Is this amazing? Yes and no. Practically every kid developes this skill (except for Cleveland Indian players). Yet it is very amazing, because it is real time processing of information that is quite complex when you try to break it down. Defining the optimal path to the ball requires fast image processing combined with low level calculus.
Wrong, wrong, wrong. Small children (and also adults who are not world-class athletes) trying to intercept a slow-moving object are not doing anything even approximati
Re:How much learned (Score:2)
Art School (Score:3, Interesting)
For example, I have been absolutely horrible at all forms of math throughout my entire life with the SOLE exception of geometry, which I never had to study for once, and got straight A's in. It just "made sense" to me on an intuitive level.
And apparently I'm not the only one. You see, I went to an art school, where a whopping 40% of people were left-handed and the vast majority of people at that school completely sucked at all forms of math....EXCEPT GEOMETRY! Now, it could just be that geometry is the easiest form of math, but I wonder how much of it has to do with pattern recognition, and how that might relate to kids at an art school where people have an inherently higher level of innate pattern recognition ability.
Now.....all of this is just me explaining my observations, but I was wondering if someone could shed some scientific light behind this. Is there any correlation between the two?
Re:Art School (Score:2)
intrinsic knowledge or common sense? (Score:2, Interesting)
They even admit this test could have required only the concept of similarity; they proposed the 'map test' to rule out this alternative (but which suffers from the same problem, in my opinion).
Call it what you like - intrinsic geometric knowledge, nonverbal reasoning, or common-sense - I don't thi
Gee... (Score:2, Insightful)
That was not a geometry test though (Score:5, Insightful)
A geometry test would be different. Ask them what is the shortest distance between two points on a plane, see if they can explain what it is and why. Ask them how to find areas for different shapes. Those are the kinds of questions that geometry really answers, not the questions that require simply to notice difference between shapes.
Re:That was not a geometry test though (Score:2)
For example, most people can catch a ball. This requires the brain to do calculus at some level; However most people can not sit down and do calculus.
My nominee for... (Score:5, Insightful)
Of COURSE we are hard-wired (in some manner) for geometry!!!
We're visual creatures operating in (a perceived) Euclidean space!
How could we not be (geometry-aware)?
As to the implication that we have some innate ability to reason geometrically, I think the folks at MSNBC and the AAAS must not have tried any mathematical proofs recently (or perhaps ever).
THERE's an area where there is ample evidence that we have zilch in the way of pre-wiring (a.k.a. "instinct"), and must undergo extensive pain and effort to wire ourselves to perform logical reasoning -- a skill that is foreign to most of the human population.
There's a pretty substantial chasm between the ability to recognize lines and shapes, and the ability to develop a method for bisecting an angle (using straight edge and compass) and showing that such a method is correct (i.e., develop a proof).
Re: (Score:2)
Not Geometry! (Score:4, Insightful)
Have them write some proofs or identify the magnitude of some angles and I'll be impressed.
Re:Not Geometry! (Score:3, Insightful)
It seems what you are saying is that perhaps the brain is composed of neural networks, but is not limited to this. I suppose I would agree with that.
Geometry is Intuitive (Score:2)
Learned vs. Intuitive (Score:2)
How about another possiblity that the villagers are confronted with basic Geometry on a day-to-day basis since birth, and such things were learned out of necessity to live? These folks weave baskets to live and such things require dexterity and a spacial knowledge that is akin to Geometry. Suppose their culture was all
Re:Inherent Geometry (Score:3, Interesting)
I think the reason those abilities fall away is because they're not constantly exposed to geometric objects. I recall in a psych class the teacher explaining a certain optical illusion. I forget the illusion, but the point was this: people in western countries see horizontal and vertical straight lines more clearly than diagonal ones. Our visual cortices are hard-wired - yep - to pick up the lines which we see reinforced in our lives. By contrast, the illusion does not work on non-civilized people.