When you get an idea like "I'm going to X with Y, where Y is not designed to do X", it probably takes several hours or a couple of days to implement it. Are you

When you get an idea like "I'm going to X with Y, where Y is not designed to do X", it probably takes several hours or a couple of days to implement it. Are you going to let your hire take that much time? And more importantly, are you going to pay the hire for that time, regardless of whether they succeed in doing it?