For thousands of years, philosophers struggled with a particularly abstract, but very important, problem: how can we know what we know? This is called epistemology. Most of us probably don't think about this, but rather take it as obvious or self-evident. But spending a little bit of time on this question quickly reveals its significance. While there were sceptics before him, this kind of thinking led Descartes to a methodological scepticism until he reached a point where he felt that he could not know anything. Descartes resolved this problem for himself with his famous "I think, therefore I am", but even today people struggle with what they know, how they can know, and what they can know. Read more …
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