The A-Prime–C-Prime Theorem

Some ideas arrive wearing uniforms. The A-Prime–C-Prime Theorem arrives in a kurta — plain, comfortable, and ready for work.

The idea is simple, and like most simple ideas it is easy to nod at and hard to use. The nod is free. The use costs attention, every day, in small change.

Strip it to the floor and you find an old instruction: look carefully, judge slowly, act decently. The new name exists because the old instruction keeps being forgotten.

Think of the tuition teacher who says, 'First learn the formula, then forget where it came from — and then, one day, remember it properly.' That three-step journey is how all real learning travels.

Learning is the one wealth that survives every partition of fortune. Keep the name. Use the pause it gives you. That is the entire homework.