> Cleaning the bathroom, on the other hand, would leave my mind largely free to think whatever I feel like. I haven't calculated a cube root by hand since, wha

> Cleaning the bathroom, on the other hand, would leave my mind largely free to think whatever I feel like. I haven't calculated a cube root by hand since, what, sixth grade? (It's been so long I don't remember.) I'd hate to spend the mental cycles having to do that kind of task.