Idea Ripper // ArchiveCards: 1555 [Live] | Updated: 2026-10-14
Card #c700IR // #c700Synthesis

All requirements should be treated as recommendations, he repeatedly instructed. The only immutable ones were those decreed by the laws of physics.

— In our words · Source: Elon Musk (Walter Isaacson)

[Use when]

Blocked by "that's the requirement" -- find the human who wrote it, ask why it made sense then, and test it against physics now.

[Why it matters]

Every inherited rule is some person's past decision wearing a uniform. Physics does not negotiate, but everything else is a recommendation you can re-earn or discard -- which is why Musk demanded the name of the actual human behind every requirement.

More from Elon Musk

#c696Musk's oft-repeated mantra, the five-step 'algorithm': 1. Question every requirement. Each should come with the name of the person who made…Running any engineering or production effort -- walk the five steps in order before spending a dollar on… #c697Musk developed what he called an "idiot index," which calculated how much more costly a finished product was than the cost of its basic…Pricing or building anything physical -- compute the raw-materials floor first. A high idiot index means the… #c698When SpaceX decided to catch the Starship booster with the launch tower's arms instead of landing legs, and a follower asked why he didn't…Reviewing any design -- ask what can be removed entirely before asking what can be improved.