If I could read a book of these stories I'd stop everything and read it now. Absolutely incredible. I love stories like these, but I also understand these hells

If I could read a book of these stories I'd stop everything and read it now. Absolutely incredible. I love stories like these, but I also understand these hells are probably reserved for the special world of startups. The interesting takeaway from this for me is the question "Was the rewrite successful?". As an engineer, I understand I'm a vehicle for success at a startup. Even if I ultimately get burnt out and quit. If I make important changes, that maybe only I could have thought of before I quit, it probably becomes a good investment to hire me. Uber managed to hire enough of the "right" vehicles for success to get to the point where they shipped a platform rewrite at massive scale. By all high level objective metrics, this is probably success story. The one metric I think could derail the projects success isn't really documented--what was the human cost to this effort? I bet you looking at a graph of turnover at Uber you could probably identify exactly when this project happened. I'm curious if the engineering turnover from such a massive effort was enough to offset the benefit.