Right, but "a passing familiarity from long ago" != "knowing anything about them" in my mind. (Obviously I should have used a less hyperbolic phrase.) OTOH I wasn't aware of the phenomenon where abbreviations often fall out of use. I think the DLPFC was only carved out of conceptspace in the last decade, both the idea and its abbreviation, which does indicate that the inverse problem might be common for quickly advancing fields like neuroscience. (ETA: So, I was wrong to see this as an example of the thing I was complaining about. (I don't think I was wrong to complain about that thing but only in a deontological sense; in a consequentialist sense I was wrong there too.))