An uneducated father with his educated son went on a camping trip. They set up their tent and fell asleep. Some hours later, the father woke up his son.

Father: Look up to the sky and tell me what you see.

Son: I see millions of stars...

Father: And what does that tell you?

Son: Astronomically, it tells me that, there are millions of galaxies and planets out there!

Father slaps the son hard on his hand and says, "Idiot, someone has stolen our tent!"