You have to make some assumptions about what is common knowledge in your target audience. Probably, the author didn't design the title for a general public on

You have to make some assumptions about what is common knowledge in your target audience. Probably, the author didn't design the title for a general public on HN, but for Getz' fellow software UI researchers. Someone that's not in the target audience will have to do some extra work to get up to speed. Just like an undergraduate will have a hard time understanding a graduate text without a primer.