Speed created a new problem: several working prototypes, and no clear way to tell which one was the current direction.
Different people were exploring different versions in parallel. It got hard to tell which decisions had been made, which ideas were still exploratory, and what we were actually building.
With the team, I set up one working prototype as the source of truth for how the product behaved, and a Miro board of screenshots as the source of truth for decisions, because not everyone reviewing the work reads code. PMs, content designers, and designers commented there and divided up ownership.
The goal wasn't to slow experimentation down. It was to make fast experimentation possible to coordinate, so nobody duplicated work or built on conflicting assumptions.