What is PDCA cycle Deming?

Action observation evaluation and adjustment form the basic feedback cycle.

Example: You launch a new pricing page. You watch session recordings (observation). Bounce rate is 68% and nobody clicks the CTA (evaluation). You rewrite the headline and simplify the layout (adjustment). Bounce rate drops to 41%. The four parts ran in sequence — you just never named them before.

This concept is part of Feedback Loops in the How to Think curriculum, which builds the epistemic infrastructure for feedback loops.