Check out this teacher-oriented article What's Your Name Again? by Mary !McKinney. It starts:

“I'm terrible at names,” complained my friend Steve. He's a respected professor of
entomology who is fascinated by ugly bugs that make many of us shudder. “Really?” I
asked. “How many species of beetles can you identify by name?”

Heh!

Random Emacs symbol: comint-input-ignoredups – Variable: *If non-nil, don't add input matching the last on the input ring.