Answer:
How do you discover something that does not exist?
Dora died at a very old age on her 24th birthday. How can this be?
A man goes upstairs to grab his time machine. He walks downstairs then goes back in time 200 years. Why did he go downstairs?
An archaeologist digs up two perfectly preserved bodies. He immediately identifies them as Adam and Eve. How can he tell they are Adam and Eve?
First I threw away the outside and cooked the inside then I ate the outside and threw away the inside. What did I eat?
What sphinxes employ and players enjoy.