[addaon]

> The most important ingredient by far is competent people.

Having competent people is a huge time (cost) savings. But if you don't have a process that avoids shipping software even when people make mistakes (or are just bad engineers), you don't have a process that maintains quality. A bad enough team with good processes will cause a project to fail by infinite delays, but that's a minor failure mode compared to shipping bad software. People are human, mostly, and if your quality process depends on competence (or worse, on perfection), you'll eventually slip.

[hakunin]

You'll slip and regain your footing a few hours later without much loss in most industries.