I write most things two or three times. I am not clever enough to hold a whole system in my head at once --- so doing it wrong the first time gives me somewhere

I write most things two or three times. I am not clever enough to hold a whole system in my head at once --- so doing it wrong the first time gives me somewhere to hang my ideas. The first time through is very fast --- lots of code written and deleted and commented out and back in again. The subsequent rewrites are much slower; a day might have negative net code as likely as not.