The most famous time traveling paradox is the Grandfather Paradox, where the traveler goes back in time to kill his own grandfather and thus prevents his own birth--a paradox. An adaptation to this paradox is Hawking's Mad Scientist Paradox where a mad scientist opens up a wormhole one minute into the past and assassinates himself. Since this is a paradox Hawking concludes that the wormhole cannot exist. The rest of this thread is my attempt at solving this paradox via a thought experiment while allowing such a wormhole or equivalent time traveling mechanism to work without causing a paradox. Possibility 1. Closed Time-Like Curves behave in such a way that causing a paradox is entirely a statistical phenomenon analogous to the 2nd Law of Thermodynamics. Let's suppose that we cannot go back in time a single minute or even a hundred years. Suppose we can only go back so far as to the probability of creating a paradox is statistically equivalent to that of the 2nd Law of Thermodynamics. As an example, at this moment let's say we can travel back 5 billion years, before the earth even formed. It would be impossible to compute which events would actually cause a paradox and to accidentally cause one would be equivalent to reducing the total entropy of the universe.