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David Brin's article "Johnny can't code" can only be seen as reflective of a broader trend in many disciplines to remove the foundation knowledge that the rest sits upon.
Indeed, in Australia there is currently debate about the current practice of pruning away the amount of anatomy a medical student needs to learn before graduating - a concept that may seem to defy belief but is one that is causing real academic revolt.
Robert Heinlein said "Specialisation is for insects" - and indeed maybe we will pay a price for readily obseleting knowledge.
I hate to say it but maybe that dreadful movie from 2000, Space Cowboys, makes an important point!