Most of the time customers don’t know what they want in advance.) - Eric Ries

As you consider building your own minimum viable product, let this simple rule suffice: remove any feature, process, or effort that does not contribute directly to the learning you seek.

pivot is a special kind of change designed to test a new fundamental hypothesis about the product, business model, and engine of growth.

This is an important rule: a good design is one that changes customer behavior for the better.