Time travel

So I'd like to travel in time but lack any grounding in physics etc

I've been doing some research on the internets and wondering if I should take some courses at uni or something

>>56
Ugh, retard. There has never been and there will never be a string theory in 13 dimensions. The bosonic theory is 26 dimensional, and the supersymmetric theories are 10 dimensional (R^4 x M^6 where M^6 is some 6 dimensional Calabi-Yau manifold).

I don't think you can even have an odd dimensional string theory for various reasons (e.g. the hodge dual operator isn't an automorphism unless d=2n).