> numbers-driven development has been a huge issue for a long time now Ever since UX and UIs started to be driven mainly by metrics and numbers, I felt somethi

> numbers-driven development has been a huge issue for a long time now Ever since UX and UIs started to be driven mainly by metrics and numbers, I felt something started going wrong already. Since then (the decades...), I've learned about "McNamara fallacy" which seems to perfectly fit a lot of "modern" software engineering and product management today: > The McNamara fallacy (also known as the quantitative fallacy) [...] involves making a decision based solely on quantitative observations (or metrics) and ignoring all others. The reason given is often that these other observations cannot be proven. https://en.wikipedia.org/wiki/McNamara_fallacy https://en.wikipedia.org/wiki/McNamara_fallacy