Math

There's a fly in my room. I am laying down on the couch reading a book, as a fly circles around, bashing itself into the window next to me. My first thought: remove the fly. Fortunately i only have to lift my arm and rotate a handle which opens the window. The fly ceases its bashing and settles on the now open window. It's freedom is within grasp, but it now seems calm and content to just hang out. I lay on the couch watching it slowly walk up the glass pane. Several thoughts go throug...