ELI5: Explain Like I'm 5

Unknowability

Unknowability is when something is impossible to know or find out about. It's like when you are playing hide and seek and your friend hides so well that you can't find them no matter how hard you look!

In the world, there are some things that are just too complicated or too secret for anyone to figure out. For example, nobody really knows what happens after we die because nobody has come back to tell us. Scientists can also study things like black holes, which are really hard to understand because they are so far away and the rules of physics that we know might not apply to them.

Sometimes we can try really hard to figure something out, but we still can't know everything about it. And that's okay! There are still many things we can learn about and enjoy, even if we can't know everything.