Idea Filters: Lessons for Technical Founders

Five lessons recurring across technical founders who actually filter.

Lesson 1: The Build Itch is the Enemy

Wanting to code is not signal. Customer need is. Filtering disciplines the itch.

Lesson 2: Reachability is the Cliff

Most filters die at F1. That is correct. Most ideas have no path to buyers without a pre-existing audience.

Lesson 3: Non-Technical Reviewer Is the Highest-Leverage Step

20 minutes with a non-technical advisor catches more filter errors than 2 hours alone.

Lesson 4: Landing Page Before Code

Founders who do this convert at 3-5x the rate of those who code first.

Lesson 5: Filter Once, Then Build

Re-filtering during a build is procrastination. Trust the filter. Build. Re-filter only after launch.