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Yes, you bring up a good point about the other practical issue with adopting Agile. It says that the developers and the business people need to work together daily, as becomes necessary when there isn't a manager to act as the go-between, but as you point out the business people in reality just want to play golf, not become shared participants in the development process.

But, again, Agile is pretty clear that it requires special people. It was never meant for everyone. To observe it in a light where it is applicable to all organizations violates its very existence.