Here's an imagined conversation:
Client/stakeholder: "Okay, so you're going to work on this project for a while, and when it's all done, you'll deploy it."
Technologist: "Actually, we'd like to do this the Agile way: we'll do a series of small Sprints, and deploy frequently, analyzing and iterating as we go."
Client: "Okay, sure. Whatever. You'll do your little sprints, and deploy frequently, until the project's all done."
Technologist: "Oh no. The project will never be done."
Client: "Say what now?"