I’ve been using Linux for a long time, and using the less utility increasingly over recent years. Discovering that I’d been missing some really great functionality and would never have known but for a twitch made me sit up and think a bit.
Steve Krug’s Don't Make Me Think taught me an amazing word: satisfice. We all do it, all the time. We learn just enough to satisfy our immediate need with exactly what will suffice and no more so we can move on to whatever our real goal is, and that’s exactly what I did with less, resulting in going out of my way to open a file for editing occasionally because I didn’t take a few minutes to read the manual.