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lazide10/12/20241 replyview on HN

No you couldn’t. And it’s been 80 years now!!

All of those things you name came directly out of attempts to create testable hypotheses from experimental observations, and all of them were tested as soon as anyone could build an experiment apparatus or gather the data to do it. Which didn’t take that long considering the extreme engineering difficulties in actually building the apparatus for some of them.

String theory has avoided testability it’s entire existence, nearly a century now, and no one that I’ve seen is even attempting to make an experiment to try to test it - because at this point it’s clear that no one on the theory side is interested in making a testable hypothesis. That isn’t luck, that’s talent and hard work.

It’s one of the most absurd grifts I’ve personally seen play out so far.


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zachf10/12/2024

80 years? I would date its birth as 1968-9 (Veneziano), it’s hard for me to imagine calling prior work than that as “string theory”. But never mind that—the bigger problem with this (quite common) argument is that everything about quantum gravity, not just string theory, has avoided testability because our other theories are too good, and because we’re limited to doing experiments on Earth with equipment built on human scales with human budgets, and that’s just not where quantum gravity would naturally make itself known. So really this argument just suggests we shouldn’t study quantum gravity at all. Maybe that’s your actual opinion—it’s a waste of time if we can’t access the Planck scale, we should table it all and sit on our hands until we can. But string theory really is quite interesting to study, stuff like AdS/CFT is just really surprising and magical when you get what it’s about, and it would be a real pity to not pay the meager salaries of theoretical physics just because of pessimism. String theory is so far from fully understood! It’s actually…really hard!

BtW I think you got this 80 years number from looking at the earliest date on the Wikipedia page. You might want to read it more carefully. Not everything leading up to string theory is string theory.

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