Elon Musk was asked why he sets deadlines that everyone knows are impossible. His answer explains a management technique that no business school teaches because it sounds irrational on paper. "An impossible deadline gets you 80% of the way there in the time a reasonable deadline gets you 40%." Everyone expected him to say the deadlines are aspirational. Stretch goals. North stars. The usual corporate language for targets nobody expects to hit. He said that's not what they are. The deadline is real. He knows it won't be met exactly. But the urgency it creates is real. When an engineer has 6 months to finish something, the first 4 months are spent overthinking, over-designing, and attending meetings about how to approach the work. The actual building happens in the last 2 months under panic. His deadlines skip the first 4 months. By setting a deadline of 2 months for a 6-month project, the panic starts immediately. The overthinking phase is eliminated because there's no time for it. The team builds first and refines later. The result at month 2 is roughly what month 4 would have produced under a normal timeline. Then the refinement happens in months 3 and 4 instead of months 5 and 6. He said the anger people feel about missing an impossible deadline is less damaging than the complacency of coasting toward a comfortable one. Missing an aggressive target by 20% still puts you ahead of hitting a conservative target by 100%. Reasonable deadlines produce reasonable results. Unreasonable deadlines produce unreasonable results delivered slightly late. The second outcome is better every time. The people who complain about the deadline are comparing it to comfort. He's comparing it to output.