For me, there are people want to perfectly analyze a thing and discover its model, there are people try to do something with the thing with whatever they have. We as humans are usually not able to achieve the first. The later is what we have every day, almost all day. A perfect model does not mean we know how to do anything properly. Without a perfect model, it's even less possible. But humans always want to do something while we can ... While most parties are doing things the similar way. They are able to play the same game before the game can not continue. Just another way to put what I said above:)