I have looked back in the notes from my last startup. I was CTO and I had to spend time doing fund raising, making sales calls, editing documentation and desig

I have looked back in the notes from my last startup. I was CTO and I had to spend time doing fund raising, making sales calls, editing documentation and designs, going to customer meetings. I was never full time in development. I wrote 69 times as much code as the least productive developer and 12 times as much as our "Lead Programmer". Based on my experience 10x is a low estimate. I would say that some people are 100x as productive as others in developing software.