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1 Idea Newsletter · Jun 28, 2026

143 Days

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Manoj Radhakrishna · 1 Idea Newsletter

How long to build a fighter jet?

Take a guess. A real one.

Whatever you said, Kelly Johnson beat it.

First jet fighter the US Air Force ever flew. 143 days.

Not weeks. Days.

We never ask how fast something could go.

We ask how long it usually takes. Then we add a buffer. To be safe.

That number isn’t a measurement. It’s a habit.

Your deadlines are mostly inherited.

Nobody calculated them.

Somebody guessed, once, and everyone copied it.

So the only question worth asking this week:

What are you giving a year that secretly takes a week?

Patrick Collison, the guy who built Stripe collected examples of people doing ambitious things absurdly fast.

Here is the list: Some examples

That’s it for this week. Enjoy your Sunday

Manoj

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Read the original on manojradhakrishna.substack.com

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