Teach enough to reveal the decision

Teaching can be an effective part of selling when it helps the buyer understand a problem. It can also become a way for the adviser to avoid asking for business. The meeting fills with useful explanation, but no one knows what decision follows.

Choose the lesson that matters to the buying situation. A buyer considering an operational change may need to understand a tradeoff, a hidden dependency or the difference between two approaches. They probably do not need a complete history of the discipline.

Connect the explanation to their context. "Here is why these two metrics can move in opposite directions" is useful if those metrics influence the buyer's decision. The same explanation can be an impressive digression in another meeting.

Leave space for disagreement. Teaching should not place the seller above the buyer. Ask how the idea fits their experience and what it fails to explain. Their response may expose an assumption that needs changing.

At the end, make the next decision explicit. Does the new understanding justify an assessment, a different scope or no action? A useful lesson can lead to any of those outcomes.

Bound the free contribution. You can explain the reasoning behind an approach without performing the entire analysis. The distinction should be clear enough that the buyer knows when education ends and professional work begins.