To steal ideas from one person is plagiarism; to steal from many is research.
If you shoot a Mime, do you need to use a silencer?
If people from Poland are called Poles, why aren't people from Holland called Holes?
Why doesn't Tarzan have a beard? Why doesn't glue stick to the inside of the bottle?
Ever wonder what the speed of lightning would be if it didn't zigzag?
OK, so what's the speed of dark?