Epistemology: the study of knowledge.
Can you answer these questions?
- What is knowledge?
- How is knowledge acquired?
- What do people know?
- How do we know what we know?
This page answers those questions to the best of it's ability. It's a long article, but it's incredibly thought-provoking to read. And to think; even as you read, you are gaining knowledge. But is it true, if it is arguable? If none of it is provable, it doesn't even matter. Or does it? You decide.