Spotify analogy doesn't work
So, why do I hate this so much. It looks like a great idea, it really does - what use is *just* a wheel? Or a car without a steering wheel? All the stages of development seem reasonable. But there's a problem. What were the requirements? A car meets a very wide range of requirements, a skateboard just a few specific ones. What if the most important requirement was to be able to carry 3 large suitcases and 4 people 200 miles? What's the first "prototype" there? What's the first step then? It's beguiling and misleading to present this as it's SUCH a narrow focus of what the requirements are and what the customer will actually be able to use as the product develops. Interestingly the picture is called "prototype". And the end product is a car. Find me ONE car maker whose first prototype is a skateboard. So how do car manufacturers prototype? They may create the basic chassis with no shell and make sure that the manufacturing process w