brainstorm-experiments-existing

To validate assumptions for an existing product, you design low-effort experiments like prototypes, fake doors, or surveys. This approach enables faster learning with minimal risk by outlining quick validation steps before committing to development.

A fake door test is a low-effort experiment method to validate feature ideas cheaply before development. You should use it when you need to test user demand for a new feature concept with minimal build effort.

You define metrics and success criteria by creating a structured measurement plan that outlines data collection methods and decision criteria for each experiment. This ensures clear evaluation paths for prototypes or A/B tests.

The best way to structure a product discovery experiment plan is to document assumptions, proposed experiments, metrics, and decision criteria in a markdown-ready format. This provides a clear path to learning with minimal build.

Yes, you can use wizard-of-oz methods and spikes to test feature ideas cheaply. These low-effort experiment approaches allow you to validate assumptions and generate multiple concepts without committing to full development.