It is important to understand that different people have different brains. Genius, I know. But this point was driven home to me recently. I pay a lot of attention to what is going on in my head and the heads of those around me. I am the first to spot a hawk or a lizard. I can sense a motorcycle before I can hear it. But I am largely oblivious to many things.
To wit, my buddy Josh lives down the hall from us. I watched his dog over the weekend. My wife went over once and mentioned all the cute pictures on the walls, the giant fish tanks in the kitchen, and the fact that his kitchen tile is our bathroom tile. I had never noticed any of these things.