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Whilst I don't know anything except the definition of String theory and I'm a beginner, I'm curious about it.

What I would like to know is: does string theory change a lot in Physics? If it's not true, what else would suffocate in Physics due to String theory? It's just an assumption and not some experimental observation, right?

A layman's explanation would be helpful!

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closed as not a real question by Sklivvz, Waffle's Crazy Peanut, Manishearth Dec 23 '12 at 8:53

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

For one, people would stop making and worshipping the "Not even wrong", comments about string theory. – centralcharge Aug 27 '13 at 15:07
up vote 7 down vote accepted

OP wrote(v1):

Would string theory change everything? Does String theory change the whole Physics?

More generally, it seems OP is asking if a new theory would contradict old experimentally well-established theories?

No, the very first test of any new theory is if it can reproduce the old theories in their respective domain of experimental validity. If the new theory fail that test, it has hereby been falsified, and it must therefore be discarded.

Concerning experimental tests/signatures of string theory, see e.g. this and this Phys.SE post and links therein.

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