Would you really want to work at that company anyway? Here's how it goes where I work: - Boss: here's the business-level problem I want solved - Engineers

Would you really want to work at that company anyway? Here's how it goes where I work: - Boss: here's the business-level problem I want solved - Engineers: here's what we think it'll take to do it, and the technical path forward - Boss: either (1) cool, what can I can do to help you get started? or (2) yikes, that's a bigger problem than I thought. What's the 80% solution?