If you had a clone of yourself in a room for one hour?

Wow...broad question. For myself I would talk about my life and see how the other me responds. It would give ma unique perspective in how I view myself I suppose. Even if we shared the same memories we would both be processing different information for the time we were together. I could only talk about what I was thinking and ask him the same. I don't know how much you would really learn. Learning is about different perspectives not the same one coming from a different spot lol.