The whole idea of a sprint commitment, of pointing, of measuring velocity, of a sprint demo, is in deference to the business need to plan and adjust priorities.

The whole idea of a sprint commitment, of pointing, of measuring velocity, of a sprint demo, is in deference to the business need to plan and adjust priorities. It does them based on realities, whereas older more waterfall style methods tend to due them on hypotheticals, decisions made with the least amount of information, and then the business wonders why the heck everything is late.