Observe how many great designs are thrown out by the designer before he finally settles on the theme.
Even great designers need to iterate. Their first sketch will be immeasurably better than our first sketch, but the concept stays the same. As you get better you notice more subtle flaws in your designs and so good and even great designs are discarded in a moment.
I wonder if the number of iterations a designer (or writer) needs stays roughly constant throughout his career. I suspect it stays roughly the same. Anecdotal data anybody?
