I watched Burt Rutan’s team claiming the X-Prize in early 2000s. Maybe scaling from single person to multiple crew had unexpected complexity? “The first 90 per

I watched Burt Rutan’s team claiming the X-Prize in early 2000s. Maybe scaling from single person to multiple crew had unexpected complexity? “The first 90 percent of the code accounts for the first 90 percent of the development time. The remaining 10 percent of the code accounts for the other 90 percent of the development time.” [1] [1] https://en.m.wikipedia.org/wiki/Ninety-ninety_rule https://en.m.wikipedia.org/wiki/Ninety-ninety_rule