If you're bored and hanging out with physicists and/or mathematicians or maybe some engineers, perhaps over some beers you can have a fun conversation along the

If you're bored and hanging out with physicists and/or mathematicians or maybe some engineers, perhaps over some beers you can have a fun conversation along these lines: Here's something uncontroversial: if its in physics, then its in math. Here's a weird proposal: if its in math, then its in physics at a greater than trivial level or it can easily be proven not to be in physics. Or if its in math, either its obviously not in physics or it is in physics even if we don't know yet. Discussion: Aside from souls and such your brain used physics to come up with some math thats not in physics so at a very trivial level that non-physics math was simulated in your physics brain, so it is now in physics because a physics simulation of the particles of your brain, however impractical to actually simulation ... naw thats trivial cheat that would include everything. And speaking of easily be proven, a classic example is we know two dimensional geometry fairly well and it doesn't apply to the greater world although it makes an entertaining plot for a book named "Flatland". So as your buddies gulp down some beers, challenge them to think up a math that is not in physics as kind of a parlor game. It can be fun, especially if you allow extremely extended analogies and have a very relaxed beer fueled attitude toward handwaving arguments. Some topics like string theory or the multiverse will have to be banned to prevent pointless fighting. Anyway the relevance to OP and the comment is that in a drunken handwaving sense math that hasn't been found in physics is possibly a failure of the imagination of the physicist, so Riemann seems useless today is an attack on physicists not an attack on mathematicians. You can just picture some seance between Newton and Maxwell, Yo Mr Physicist I invented all the math you needed centuries before you got around to noticing electromagnetism, like whats your excuse for the delay?