Why did Einstein create general theory of relativity in western country? I believe, if he lives in today’s Beijing, he will be able to create the theory there for sure. Why? Because those cities have bad traffic. One important conclusion of general theory of relativity is that time increases where matter gathers. In big cities, time increases where vehicles gather.

This was a joke for my wife and it worked. I gave it a second thought afterwards and felt that it may not be a pure joke.