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Why I didn’t sign the Fields medallists’ letter

286 points · 412 comments · simianwords

  1. layer8 · · focus · HN ↗
    > we urgently need to come up with good ways of explaining the value of having a large pool of human mathematical experts, even if it is no longer part of their role to find new proofs of theorems.

    This is the main issue, and while I fully agree with that value sentiment, the Fields medallists’ letter failed to provide convincing arguments for why mathematicians should widely receive funding for merely understanding things, and how competition for postdoc and tenure positions would work under these circumstances.

    1. impendia · · focus · HN ↗
      Math professor here.

      Different academic disciplines are very different, and most don't engage in the same kind of black-and-white problem solving that mathematicians do, where you either have solved a problem or you haven't.

      But all insist that you engage in some sort of outwardly visible production in your field: books, articles, conference presentations, public lectures, exhibitions, performances, something.

      We haven't yet figured out what that should be, but I presume that everyone would agree that this should continue. As one possible model, check out this blog post of Terry Tao's, where he gives his own perspective on the recently proved Jacobian conjecture.

      <a href="https:&#x2F;&#x2F;terrytao.wordpress.com&#x2F;2026&#x2F;07&#x2F;21&#x2F;a-digestion-of-the-jacobian-conjecture-counterexample&#x2F;" rel="nofollow">https:&#x2F;&#x2F;terrytao.wordpress.com&#x2F;2026&#x2F;07&#x2F;21&#x2F;a-digestion-of-the...

      When computers can solve the underlying actual problem, this sort of work seems likely to rise in value, and be something which a greater number of mathematicians engage in.

      1. pred_ · · focus · HN ↗
        Lest someone gets the wrong impression, I think that any mention of the a priori strange-looking resolution to the Jacobian conjecture should be accompanied with a read of pages 160–161 of <a href="https:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;2609.05746" rel="nofollow">https:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;2609.05746. The tl;dr being that the very same construction featuring in the resolution appeared earlier in a draft paper that was accidentally made publically available for a travel award application. The same story has accompanied several other of the major announcements made by now. We haven&#x27;t have a move 37 for maths yet, despite what OpenAI&#x27;s marketing department might want you to believe.

        Similarly, if all you ever read were OpenAI blog posts, you would get a very wrong impression of the usefulness of large language models of today in maths. For a working researcher, it&#x27;s not a magic wand that you point at any given proposition and it tells you whether that proposition is true or not. It does appear to help if, while pointing your wand and utter the magical incantation “do it up bro”, you also make it convert $15 million into heat, but for most people, this kind of inverted Midas touch isn&#x27;t quite accessible yet.

        Instead, the reality seems to be closer to this, projecting a fair bit: a given mathematician will have a collection of propositions that they care about, and that they&#x27;ll use as their own internal benchmark as new models come out. Very rarely will anything come out of it, but sometimes, in particular if you make sure to provide the wand with all relevant context, papers that could be relevant, proof strategies and lemma structures that you suspect are useful, something (which may or may not be plagiarism) will pop out, and that&#x27;s really nifty. Moreover, it is not unimportant what the proposition and the relevant proof is like. And what does come out tends to be quite bizarre; proofs that use terminology that doesn&#x27;t exist, seem overly pretentious, based on nonsense analogies where it&#x27;s surprising that it even works at all, and the only comfort is that you can join it with an equally unreadable Lean blob. And where you would be _crazy_ to just publish those artifacts and think that you have contributed much of anything to maths.

        But sometimes it works. It&#x27;s still very unclear what kind of maths the models are good at, but it seems to certainly be an advantage if what you&#x27;re looking for is a counterexample hidden in a pile of otherwise similar-looking non-counterexamples, if your proof is one that requires considering 36 different cases, each of which are so tedious that no researcher would have the patience to go through them by hand, or if the proof is an amalgamation of several existing structures, some of which are only documented in Georgian.

        The gold rush, more than anything else, seems to be populating the convex hull of existing maths.

        This can all change. The $15 million wand requirement today will be less tomorrow. Whether we ever get a move 37 is less clear, or whether we will eventually reach stagnation as all low-hanging fruit is picked, and the convex hull is populated; call this cope if you like. But maybe we do get move 37s all over the place, and it&#x27;s fine that people think about what that future will look like.

        Until then, and while we&#x27;re still picking friut, let us rather have a think about what we can do to fix the incentive mismatch, to ensure that we increase the prestige of digestion over being the first to convince the LLM to do it up. Since that&#x27;s the one thing everyone seems to agree, chances are it&#x27;ll probably converge to something that doesn&#x27;t have to be written in commandment form, but out of the guest posts hosted by Tao so far, the one by Antieau has some useful suggestions for standards (that aren&#x27;t entirely unlike those from Leiden): <a href="https:&#x2F;&#x2F;terrytao.wordpress.com&#x2F;2026&#x2F;09&#x2F;15&#x2F;fast-math-slow-math&#x2F;" rel="nofollow">https:&#x2F;&#x2F;terrytao.wordpress.com&#x2F;2026&#x2F;09&#x2F;15&#x2F;fast-math-slow-mat...

        1. [deleted] · · focus · HN ↗

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