I had an interesting experience today. I was just staring out the office window at all the buildings which normally appear 2-dimensional, flat, just part of the same old cityscape. Then suddenly one of the buildings just came into focus, like it was suddenly more real to me than the rest. No reason that I could tell. I just kept staring at it and it just kept looking more solid than everything else. Very odd. It wasn't even a very nice building.