Viaweb took over my life when we were working on it. I worked all the time I wasn't sleeping. Not because I was inefficient or thought it was the conventional thing to do (I knew practically nothing about startup conventions then) but because there was just so much work to do.

I suppose I could have worked slower and things might have turned out the same anyway. But probably not that much slower. And I certainly had no idea at the time how much margin for error I had.