Time Travel Paradoxes

There are several things called paradoxes in the physical world which really aren't paradoxes per se. Let's say you took the smallest person on a basketball team and put them with a group of horse jockeys. Removing the smallest person from a basketball team would increase the average height, and adding them to a group of smaller people would increase their average height as well. In nutrition, there was something called the French and Israeli paradoxes. Fenno's paradox states that most polls show that Americans have low approval for Congress as a body, yet most individual members of Congress have very high rates of re-election. The apportionment of representatives also has several paradoxes.