The point of conclusion-first isn’t necessarily to save time, it’s so I (as an executive) can pressure-test / place into context all of your ensuing explanation

The point of conclusion-first isn’t necessarily to save time, it’s so I (as an executive) can pressure-test / place into context all of your ensuing explanation because I know what your end-point is. This isn’t unique to business...academic papers have abstracts that do this; math proofs have the statement they’re proving up-front.