But there's a curious and troubling aspect of most developer's "familiarity" with JS: it's quite shallow and incomplete. That's not a criticism or insult, though. It comes from the pragmatism of just needing to learn enough to get code shipped. JS is great because that barrier is so low, and lets so many get code out the door quickly. It's just that with this low barrier, most never move beyond that surface familiarity to deeper understanding.
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