[tobr]

One necessity for a successful prototype is that you have a pretty clear idea of why you’re making it and what you hope to learn. You also want to consider if the cost of making the prototype will be justified by those learnings. With experience you do this instinctively, as part of the process. You know what answers you need and how to get them cheap enough.

In the case of surgery, where someone’s life is on the line, it’s not going to be worth the cost.