I thought I was a pretty hot Pascal programmer in grad school. Then, for a period of time, I was tasked with teaching Pascal to professional programmers and eng

I thought I was a pretty hot Pascal programmer in grad school. Then, for a period of time, I was tasked with teaching Pascal to professional programmers and engineers throughout Texas Instruments. I quickly discovered that there were aspects of the language (even in a language as simple as Pascal) that I found difficult to explain because I didn't fully understand them. Getting to teach the subject multiple times and each time making the presentation clearer made me understand the language, it's limitations, and effective use much better.