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保罗·格雷厄姆：把想法写成文字·第4则
保罗·格雷厄姆《《把想法写成文字》》· Putting Ideas into Words · 行动 · 领导 · 人性
Indeed, this is a trope in movies: the guy who claims to have a plan for doing some difficult thing, and who when questioned further, taps his head and says "It's all up here." Everyone watching the movie knows what that means. At best the plan is vague and incomplete. Very likely there's some undiscovered flaw that invalidates it completely. At best it's a plan for a plan. In precisely defined domains it's possible to form complete ideas in your head. People can play chess in their heads, for example. And mathematicians can do some amount of math in their heads, though they don't seem to feel sure of a proof over a certain length till they write it down.
出处：
https://paulgraham.com/words.html
定位：Essay, additional excerpt 4 · 核对日期：2026-10-19 · 核验：短摘录
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电影里常有这种桥段：一个人声称有办法搞定难事，别人追问细节，他敲敲脑袋说“全在这儿呢”。观众都明白，这计划顶多是模糊不全的，很可能还有致命缺陷没被发现。说白了，那只是个“计划的计划”。只有在定义精确的领域，比如下棋或做数学，人才能在脑子里形成完整的想法；但数学家写下来之前，对长证明也没把握。
上下文
格雷厄姆用电影桥段讽刺那些自以为想清楚了、其实没写下来检验的人。
今日一问
你脑子里有没有一个“全在这儿”的计划？把它写下来，看看哪里会卡住。
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