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Are math skills necessary? 
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#1
Jan2412, 06:19 PM

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I'm very good at math and scored high during all my life  but I must admit that nothing I have found until now couldn't be done better by programming. So, if someone wants to understand the nature of the world, not for an university or for jobs, but for it's sake  can you provide me one single example of where advanced math could be more useful than just understanding the subject and using computers to do the calcs.
This topic is not very clear, so rephrasing: 


#2
Jan2412, 06:38 PM

P: 252

Cryptography. Say I give you an integer with around 180 digits. Now I ask you to find a prime factorization for that number, what do you do then? Brute force? It's a very tough problem in general, and you WILL need advanced math to even attempt it, let alone make a program.



#3
Jan2412, 06:39 PM

P: 1,084

I think that the problem is more one of checking the computer's accuracy. Numerical methods can be unstable for certain classes of problems, and all nontrivial programs have bugs anyway.
If you don't understand the math, you won't be in a position to properly evaluate a computer generated answer. Just think about calculators for a second. If I ask you to divide 117.938 by 19.767, clearly a calculator will be much quicker. But if you come up with an answer of 56.556, how will you know that you accidently pressed '1' twice without knowing that 120 / 20 is about 6? 


#4
Jan2412, 06:40 PM

P: 27

Are math skills necessary?
First, programs, to be of any use, must be written by someone who understands the mathematics that goes into doing any calculations.
I personally believe that everything we do in physics is model building that has no real truth in nature. Consider an artist that makes a copy of a painting. You would argue that visually it is a similar painting, but it is never the original. Going back to physics I think learning physics without math is like making a photocopy of the copy of the original. Babbling done. Eric 


#5
Jan2412, 06:47 PM

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You can't just separate advanced math and physics. Furthermore, who will write all this fancy programs for you?? People who know the math!! 


#6
Jan2412, 06:50 PM

P: 50

TMFKAN64 you don't get the point. The computer can provide wrong answers as you. This has nothing to do with the issue. You can check it. I'm proposing a replacement of hand algebra to programming as the primordial tool to your self development of scientific knowledge. Literary: changing the paper to the keyboard.
Same to Micromass. It's about changing arcaic hand algebra to programming as the main tool for humans to work with math. Where I wrote "math skills", visualize it as youself working into your algebra on a paper, getting an integral algebrically, solving a differencial equation by hands. Couldn't this be replaced by understanding what an integral is, and using the computer to solve it for you? You don't have to get deep into every topic to use it properly. Time wasted is advancement lost. Reading the topic again I admit it's not clear so this is bad news for the proposed discussion. 


#7
Jan2412, 06:56 PM

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I'm sorry, but I find this very sad. People need to know how to calculate. They need not be good at it or it needs not be fast, but they need to know how it goes. You can't possibly talk about integrals and derivatives without ever having calculated one. 


#8
Jan2412, 07:02 PM

P: 252

You clearly have never done any higher math. What you are basically saying is: "Let's get an idea of what a car is, and then let's forget about building one ourselves, let the robots do it.", except that you almost make it seem as if that's equivalent to spending the time building the car yourself. How would you ever develop any mathematical maturity whatsoever? How would you advance mathematics if you didn't develop intuition and problem solving skills? Mathematics is not just a "read it, know it" type of monster. It's a common saying that you have to fight math to understand math. 


#9
Jan2412, 07:06 PM

P: 50

People are strange. I'm done here. Got my answer. Thank you. 


#10
Jan2412, 07:12 PM

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P: 18,019

Just knowing what an integral means is ok. But never calculate one makes you out of touch with what those things actually are. It's hard to explain, but it's really true. Furthermore, what are you going to do if there are no numbers anymore, but only symbols?? How will you derive a formula from a given law?? If you don't know how to handle the numbers, then you will be hopeless if there are symbols instead. 


#11
Jan2412, 07:14 PM

P: 252

Well I suppose you and I have different views of what doing math on a computer entails. I did not mean to offend anyone, perhaps I was unintentionally harsh.. There's a good reason pencil and paper is a triedtruetested technique for math...



#12
Jan2412, 07:17 PM

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The military wants to write an algorithm to track am object falling out of the sky. You solve the differential equation numerically every timed you want to update the position of the object with your best guess, therussian programmer solves it once and just repeatedly evaluates the solution. Your program takes too long to run to successfully track the enemy nukes and the russians win the cold war in a very hot mess



#13
Jan2412, 07:24 PM

P: 50

Don't you think weird a technology available for thousand years is still the one used here? They didn't use ink and paper because they had a choice, this was just the only way they had to keep data and express concepts. Programming is essentially the same. There's nothing I can express on a paper I can't on notepad  except on the later I replace stuff like dividing by hand, solving an equation, and others, by an automated method. I won't lose a single bit of the knowledge. When you are solving an equation or performing a multiplication you are not thinking on your main problem anyway, it actually takes you off the focus. You know it.
Now this last answer really did it for me. I got an insight here. Thank you guys. 


#14
Jan2412, 07:25 PM

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P: 18,019

Perhaps Div misunderstood you, well: try to explain better to him what you mean. A very related issue is whether mathematical proofs are actually necessary for something. Why should nonmathematicians (or mathematicians) even bother with proofs?? This is quite an interesting discussion. 


#15
Jan2412, 07:31 PM

P: 50

I haven't much to add anymore, I got my answer. Also my english bad, that makes it difficult to keep a good discussion.
Office_Shredder you didn't get the point too, by the way. Knowing proofs is not an sorelated issue. It is an interesting issue, though, I agree. I'm definitely changing the paper and ink for texteditor and keyboard on my quest to knowledge. 


#16
Jan2412, 07:31 PM

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P: 18,019

And I'll bring it up again: what if your calculations involve symbols rather than numbers?? In that case, your computer will be useless. I know computers can do symbolic manipulations but it is still not good enough for if you want to do theoretical physics. Also (and I'm sure you will disagree with this), there is a certain beauty in the calculations. Actually being able to find the area under a parabola made me almost high when I first done it. After a while it gets boring, but calculations really can be pretty. 


#17
Jan2412, 07:35 PM

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#18
Jan2412, 07:41 PM

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P: 2,660

At what point do you think "understanding" kicks in? You say "understand what an integral is". Do you simply mean:
I understand the definition of a Riemann Integral: [tex]\int_a^b f(x)dx=\lim_{n\rightarrow \infty}\sum_{i=1}^n f(x_i)[x_ix_{i1}][/tex], and that's it? 


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