Comment by _delirium

Interesting, and something I didn't know. The cited source unfortunately doesn't elaborate on the context. The chronology does seem about right. The first in-print use of the term I can find is from 1969, when it was used as the title for the proceedings of an October 1968 NATO scientific conference: http://dl.acm.org/citation.cfm?id=1102020. Given the NASA/NATO personnel overlap at the time, it's certainly plausible that they got it via NASA.