Picture one fingertip pressing on one small spot. Everything about the word is in that picture: the spot is tiny, the press is firm, and the result is out of proportion to the effort. A finger on the right place above a cut slows the bleeding; a thumb on the right place in a tight calf lets the cramp go. Move the same picture off the body and onto a situation, and you get the other meaning: the one week, the one issue, the one narrow bridge where all the strain gathers, and where a small push changes everything.
可以想成一根手指，按在一個很小的點上。這個詞要講的東西，全在這個畫面裡。點很小，按得很實，而結果跟花的力氣不成比例。按對傷口上游的位置，血就慢下來；按對小腿裡的位置，抽筋就鬆開。接著把同一個畫面從身體移到一件事情上，另一個意思就出來了：那一週、那一個議題、那一座窄橋——壓力全擠在那裡，往那裡推一下，整件事就會動。
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