As for physics, you are mistaken. The only kind of "time travel" that has any basis in physics is the one using Closed Timelike Curves (which is what the article is about) and those are limited to the time the CTC was created in the past.
So, in fact, this is a very good reason to reject the argument of "If it is possible, where are the time travelers?".
As for physics, you are mistaken. The only kind of "time travel" that has any basis in physics is the one using Closed Timelike Curves (which is what the article is about) and those are limited to the time the CTC was created in the past.
So, in fact, this is a very good reason to reject the argument of "If it is possible, where are the time travelers?".