I once got into a very heated debate with some string theorists, about string theory, saying that I doubted it would ever pan out, not that it may never have any use, but questioning why it gets so much attention and yet has nothing to show for itself? now it is impossible to say never but that it is unlikely we will ever find evidence for it, string theory has been around for a over 30 years and as yet nada, it's still technically a hypothesis not a theory. Now one thing that bothered me was that I was told that I could not judge a field unless I'd studied the maths of string theory, as most people know this is post grad mathematics, usually either studied in the maths dept of the university, or sometimes in the physics dept. Although I understand how it works at a basic level, tightly wound dimensions that get rid of infinities that plague GR and QM, you know a solid overview, I don't know the impenetrable maths. Now here's the paradox, why would you study a subjects maths if you did not believe would pan out anyway, in order to more accurately criticise why it wont pan out, isn't this a waste of time? And that's not all, String Theory is impenetrable to all but a few, who are of course, since they are studying it, ardent supporters, so how in fact does one go about criticising string theory and does it enjoy a certain immunity from criticism because it is so esoteric. I have seen people who have basically become disheartened by string theory criticise it, and rather successfully, although generally they are ignored, but do you think this is one of the reasons this as yet unproveable dream has such longevity. The very fact that it does not open itself to criticism because of its nature. Unlike say QFT or GR were the majority of scientists have a deep understanding of it. Just something that has kind of been tugging at my mind? Anyone think string theory still has legs? I'm sure there are some people on this forum studying it as we speak, who deeply believe it may be useful, nay is useful. Can anyone explain to me why it has been given so many chances to prove itself?