In terms of technical solutions relevant to this community, I have often found that people understand, but they don't see why a given thing is useful, so they s

In terms of technical solutions relevant to this community, I have often found that people understand, but they don't see why a given thing is useful, so they say: I don't understand. In fact it may be necessary to explain the preceding bad ideas in terms of how they were supposed to be useful but weren't, and even how usefulness was bypassed in favor of some irresistible (and misguided) idea of virtue. Either way, understanding begins with "Why I would ever use this?" It's sort of obvious but routinely forgotten.