How much do you know about random stuff?
There are a lot of subjects out there. So there is a lot to learn about everything. There are so many subjects you may not even know about. And maybe you think you know about something and then something new comes (even if it's simple) and then you learn a whole more than you thought you could. We are heading towards wisdom, and we still have a long way to go...
You may know some stuff. But how wise are you? Can you answer to random questions about random stuff? If I start asking questions and questions about everything, would you know about them? Are you as wise as you think? Let's see how you do =D