[drudman]

Right now is time T. You can do anything you please for the next 24 hours. At time T+24h, you travel back to time T. Now, you find yourself at the same T you were at 24 hours ago. However, you can no longer do anything you please, because your actions the first time through created time T+24h. Whatever you do now, back at time T, for the next 24h cannot cause a paradox. I.e. the contention is that you cannot possibly do anything that will prevent time T+24h from happening exactly as it did. If you believe in chaos theory, you basically can't do ANYTHING other than exactly what you did, because even the slightest deviation could have an effect on time T+24h.

Did that make sense?