In my last article I talked about how interest leads people to program. Then life rose up behind me like a giant Doberman pincer and bit me on my backside; so, I didn’t think of programming for over four months. However, just this week something happened that made me want to program again.

I was preparing to teach some students how to use dichotomous keys to identify organisms. Suddenly, while I was staring at a simple teaching key for identifying fruit, my eyes glazed over and I had a moment of clarity.