Earlier quoted context omitted.
Source is the new binary. Specs and requirements are where the engineering is happening now. Of course, this was anticipated in 1971 with the creation of the very successful PRIDE methodology, but it's taken a few decades, and a complete devaluation of their profession due to AI, for programmers to catch up.
This PRIDE? https://cio-wiki.org/wiki/PRIDE_Methodology
https://www.modernanalyst.com/Resources/News/tabid/177/ID/50...
and https://web.archive.org/web/20240422044352/http://www.phmain...
https://patch.com/florida/palmharbor/50-years-pride has the meaning "an acronym for "PRofitable Information by DEsign - through phased planning and control."