A working toolset for Jobs to be Done — name the real job, map the forces that drive and block the switch, score where need outstrips satisfaction, and go validate. AI mines and drafts above the line; you judge the real human need below it; a gate marks the one need worth building for.
In discovery, the Line runs through the interpretation: transcript mining and forces mapping run autonomously; deciding which job the business will bet on is human authority, owned by a named person.