Building is the most expensive way to test demand. This is about getting a yes — a pre-order, a signed LOI, a deposit — before you write the code, and why a soft “that’s cool” is worth nothing.

This piece will cover:

• Commitment as the only real signal
• Ways to sell the thing before it exists
• Reading a real yes vs. a polite one

Working draft — an outline for now; the full version is coming.