 Most people initially find special relativity very unintuitive, and this is because in the world we've been living in all our lives, relativistic effects haven't been visible to us. But if you work with relativity long enough and do enough problems, you'll build up a new intuition, which is what we're going to be doing now. In this section, we're going to be discussing some of the famous paradoxes of relativity, physical situations where its laws seem to imply contradictory things. Now, I should stress that none of these are real paradoxes in that all of them can be resolved by thinking clearly about the physical situation. But going through them is a really great way to build an intuition and to find out where gaps in our understanding lie.