Hello! I am new here and I've been curious for a while about string theory and M-theory. Taking into account I don't have the theoretical physics background of most posters here (I'm 17), could anybody please explain any of these questions for me: 1. Is M-Theory really a Theory of Everything? What I mean by this is would it really explain all physical phenomena and describe the Universe as it really is? Or is it just a part of a larger theory that encompasses it? 2. When will we know if M-Theory really is this Theory of Everything? Is it a question of improvements in the theory behind it, or is it just a matter of finding significant experimental evidence to prove all of this? Will the LHC of CERN (if supersymmetry is detected) be proof for string theory? Also, do you believe in this decade or the next one the Theory of Everything will really be uncovered, and no more adjustments to it will have to be made? Thanks in advance to anybody who can help me answer these questions. I really am CURIOUS!