I think an idea might be worthless, but a good idea holds tremendous value. Maybe not monetarily, but in the sense that one good idea can rally other people around you to join the cause and spend their precious time and money (along side you--as others have pointed out, an ideas man work is not done after he merely lays an idea egg on the carpet like some golden idea laying goose) working towards making this thing trapped in the aether of space a reality. I think everyone is aware that startups and businesses and everything in life takes a lot of sweat, blood, and tears, but as cliche as it sounds, it all starts with that one good idea.