To write good code, you need to write a lot of code that you throw away. Draft after draft. After a few such trials, the correct formulation of the code becomes

To write good code, you need to write a lot of code that you throw away. Draft after draft. After a few such trials, the correct formulation of the code becomes apparent. Writing it right on the first try wouldn't have been possible. If one isn't a quick typist, there is more resistance involved in this writing and rewriting process, whereas for one that is, rewriting isn't as costly.