The reason we have sayings like "Ideas are worthless, execution is everything" is partly because execution often contains or reveals a great deal more informati

The reason we have sayings like "Ideas are worthless, execution is everything" is partly because execution often contains or reveals a great deal more information and unstated assumptions than your nutshell explanation. There is a great scene in The Hudsucker Proxy where he shows a circle and then a line as his diagram of his idea. This turns out to be the hula hoop and is wildly successful. The scene basically repeats -- drawing of a circle for top view, line for side view -- but the idea is now the frisbee. Effectively communicating ideas in any kind of meaningful, meaty way is incredibly hard. This is part of why demos are so useful. To sell an idea you must effectively communicate it. People sell ideas all the time, though perhaps not in the sense you mean. For example, people trying to get funding for a movie routinely have to sell the idea. This is where you get expressions like "it's Uber for X." This is an attempt at getting across a density of information succinctly. Effectively conveying a dense amount of information in a small package is an art form in its own right. People often pay to have that done or to get help with it. It's a very separate skill from seeing a solution in context because of having done work that exposed you to certain experiences.