[Guille]

The main concept with which I disagree with string theory is that it beleives that spacetime is made of what the call membranes which are 2 dimensional, and to which all the ends of the open strings (all the bosons are open strings, and fermions are closed strings, if I remember correctly) are connected. Th thing is:
1. If spacetime is 4 dimensional how can it be made of 2 dimensional objects? (this is impossible conceptually and also physically).
2. If the bosons are really 1 dimensional how can it have ends connecte dto something? (because up to what I know something that is really a 1d string, couldn't have any width in the cross-section).
3. What about the fermions? (we constantly see how matter and forces interact, in fact, alll interaction are reduced to this one (because matter to matter interaction is a cause of matter-force interaction, and also force-force interaction is a cause of force-matter interaction) so how can this be if bosons are limited to spacetime and fermions are denied to spacetime?).