During my years as an interface designer, I've worked with lots of different development teams. From big companies to small startups, the interactions between me--the product designer--and developers have been pretty consistent. We work through what interactions and features are possible given our timeframe and resources. We discuss edge cases and clarify how specific interactions should work. We debate product strategy, information architecture, target audience, front-end technologies, and more. We also frequently encounter the same issue: the need to consider what's not there.