This is a sweet little story, exactly described by its title. The professor in question is an elderly mathematician who has had a brain injury that has left him with only 80 minutes of short-term memory. The housekeeper, therefore, has to introduce herself to him every morning when she arrives at his house.

She has a son who comes along sometimes, and there are maths puzzles and baseball.

It doesn’t sound like much from that description, and it’s very short. But it’s thoroughly compelling and enjoyable.

In the interest of trying to catch up, I’m not going to say much about this. You probably know all about this already.

Also, it’s been quite a while since I read it, and although I enjoyed it, it hasn’t really stuck around in my head in a way that leaves me much to say. It’s clever in giving us some idea of what it might be like to live with autism. That might be its greatest strength.

[Great use of Bash scripting to do a maths puzzle, but demonstrating lots of useful features.](http://penguinpetes.com/b2evo/index.php?title=using_bash_to_solve_a_brain_teaser&more=1&c=1&tb=1&pb=1)