Why is a Raven Like a Writing Desk?

I sometimes wonder if the science we study in school is actually real or if it’s all made up. Maybe it’s simply a coincidence that all the theories work out. I mean, nothing is ever truly proven. They even teach you this in your basic science class. What if everything we’ve ever learned is actually completely false? There is no way to know for sure, but for now, I will be forced to study questionable concepts that may or may not be legitimate.

This riddle used to irk me quite a bit. “Why is a raven like a writing desk? Why is a raven like a writing desk? WHY IS A RAVEN LIKE A WRITING DESK?” After years of analysis, I accepted that it doesn’t have to have an answer because, well, most things in this world have no definite answer.