4 ms·

Sorry I signed an NDA with my time travel provider. Just wait six months, you'll figure it out.

• andsoitis 3y ago
  You might have said this in jest, but I think it is a strong argument against the possibility of time travel into the past.
  • datadrivenangel 3y ago
    efficient market hypothesis. No time travel because all valuable information has already been sent back through time.