核心畫面

One way to hold this term: things are being added to a pile, one at a time. For a long while nothing happens — the pile just sits there. Then one more is added, and the whole pile starts going by itself, and no one has to push any more. Critical mass names that amount: not the biggest amount, the smallest one that is still enough.

可以想成有東西一個一個往上堆。堆了很久都沒事,那一堆就只是靜靜躺著。然後再多放一個,整堆忽然自己動了起來,而且不再需更多收起可以想成有東西一個一個往上堆。堆了很久都沒事,那一堆就只是靜靜躺著。然後再多放一個,整堆忽然自己動了起來,而且不再需要人推。critical mass 指的就是那個「剛好夠」的量。注意它不是「最多」,而是「最少、但已經足夠」。英文裡 below、reach、above 常跟著它,就是因為重點永遠在那條線的上下。