What was it? Here's mine, it's about fate:

Physics only allows one thing to happen give a certain set of circumstances. Particles can only act one way, electricity can only act one way, gravity can only act one way, and even strings can only act one way. Therefore, everything that happens, has happened, or will ever happen is just based on a complex mathematical equation, all seeded by the state of the universe at the instant of creations.

This means that you don't have free will, everything that you do is predetermined by insignificant little 12-D strings. And if you could know what every string in the universe was doing at one time, you could calculate the exact state of any point in the future or past.