Ready at the Line
Most of the work that precedes a big commitment is reversible and cheap. Doing all of it in advance — right up to the one irreversible step — turns a slow decision into a fast one without taking the risk early.
Execution
When Research Is Done Enough
Pre-build research has a definite end point that's hard to feel from the inside. Knowing when to stop researching and start building is its own skill, distinct from the research itself.