[hiAndrewQuinn]

"Mathematics isn't about proving the statement! It's about the collection of substatements which lead to the proof of the statement."

"Okay, so what determines what is and is not allowed in the collection?"

"Whether the given substatement is true or not, of course."

Like this is obviously silly, right. In your view you could have two guys both trying to prove or disprove that the area of the unit circle is 3, and yet only the guy doing it with some vision of nobility where he's building up to this grand theory of approximations is the one actually doing "real" mathematics. The guy who's doing it just because he thinks it's neat and would like an answer to the problem itself doesn't count, and you suspect he couldn't even exist.

[crote]

"Dear 13th-century Magical Oracle, It is possible to transmute lead into gold?" "Yes. This pile of giant incomprehensible spaghetti[0] is the irrefutable proof that it is possible."

What did the alchemist truly learn from this interaction? Is the answer in any way helpful for him? Will it lead to him making gold, and the implied endless riches it entails? Why should it bring him him to ask follow-up questions with useful answers like "The technology to do this doesn't exist yet and can't be developed within several lifetimes" and "It'll never be economically profitable to turn lead into gold", instead of blindly being fed piecemeal steps in the impossible task of one medieval guy building a LHC?

Writing true statements is absolutely trivial, anyone can do that. There's an endless amount of true statement which have absolutely no value to humanity whatsoever. Their proof is meaningless without something to give it context. "Substatement 1304 is true" has significantly less value than "here's something I call 'group theory', and it might also be helpful solving open issues in fields X, Y, and Z".

Mathematics is about widening our collective understanding. There will of course be some people out there who'll hear "The answer to life, the universe, and everything is forty-two", think "Neato!", and go on with their day without giving it any further thought - but I'd have a hard time calling them mathematicians.

That doesn't mean it is completely useless, of course. A "prove that no efficient algorithm exists to break this new encryption scheme" would be very helpful indeed. Until you realize it neglected to take quantum computing into account, of course.

[0]: https://home.cern/alice-detects-conversion-lead-gold-lhc/

[alberto-m]

The argument of your imaginary dialogue is very weak. To run a valid marathon one must cover 42 kms, but we do not run marathons because we want to be 42 kms away. Building a robot to do that would be probably an interesting feat for robotics, but it would not leave any mark in the history of the sport.

[program_whiz]

Isn't the question at hand whether its bad for mathematics if "prove the circle has area 3" devolves into 500 lines of inscrutable lean code, vs just having `pi r^2 == 3`? Sure they both "proved" it true/false, but knowing an answer isn't as useful as knowing why its an answer. Knowing an answer does have some value, its just not as valuable. If I can't work it out myself, I just trust the oracle.

Now if you ask "does the area of unit circle equal 4?", I don't really know, but we can go back to the oracle and ask again (we haven't learned the general pattern).

Also, I'm not sure that assuming this 'area of circle' question was cutting edge math, that the oracle wouldn't say 'yes, to a certain level of tolerance'. Can't count how many times I've seen agent decide a test needs to be loosened or deleted because its an "edge case" or "blocking". If you don't understand the proof you might get back 'yes' for some versions of 'is the area of unit circle 3' (depending on complexity of that ask).

[skydhash]

It’s like the Hilbert’s problem and the birth of computers. Turing’s paper is like 66 pages, but the most valuable output is the Turing machine which can be explained in a few paragraphs.