the.com/quickness

Speed with a brain attached — fast enough to matter, not just fast enough to blur.

means The ability to act, move, or think with little delay — swiftness, especially the kind that responds sharply to the moment.

from From Old English 'cwic' meaning alive or living (same root seen in 'quicksilver' and the phrase 'the quick and the dead'). The sense shifted from 'living, vigorous' to 'lively in motion' to 'fast' — the old meaning still survives in 'quicken,' which means to come alive, not to speed up.

vs speed
speed is a treadmill stat, quickness is a decision
in sports
first step wins before top speed gets a vote
in wit
the laugh before you finish the sentence
in survival
evolution rewarded reaction time over raw velocity
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