The problem
The value proposition canvas is a deceptively powerful tool. On the right side, you map the customer: what jobs they're trying to do, what pains they experience, and what gains they want. On the left side, you map your product: the pain relievers it delivers, the gain creators it enables, and the products and services you offer. The fit — where right side and left side actually connect — is the value proposition.
Most teams fill the canvas but never rigorously check the fit. They write pains on the right and pain relievers on the left and assume the arrows connect. But the arrows don't always connect. The pain reliever addresses a pain the customer doesn't actually care about. The gain creator creates gains the customer already gets from a competitor. The canvas reveals the mismatch — if you draw the arrows.
A canvas session that doesn't get properly captured becomes a wall decoration. The insights degrade. The team moves into execution using assumptions that the canvas session was supposed to challenge.