string theory is really over-hyped. It is possible that the final answer has something to do with string theory, but it certainly doesn't look that way if you just look at what they've achieved so far. String theory is so far removed from experiment, from anything that can be tested, that it isn't really a scientific theory the way it is.

There are some very good ideas that have come out of it, but they are really like toy models, fine ideas - they are not physical theories. That's OK, I would not have said what I said if they were happy just playing their game. But string theorists dress the whole idea up as if it were the final answer to everything. They think that nothing else should be done. And so I think they should get some stick. I work in string theory myself, but I just think it wrong to put all your shares into string theory because it's very unlikely to be the final answer.