@alexsv @lisamelton Context matters.
I was mentoring a high school robotics team and I accidentally pulled them up short and made their adult mentor gasp when I explained "Bus factor," completely forgetting that while it's industry-standard it's still kinda gross.
After a short detour through "Isekai Coefficient," we settled on the substitution "farm factor:" "What percentage of this team's members can quit this project for the humble life of the dairy farmer before we're in trouble?"
(... I like it because it has the added nod-and-wink to the original source material, as the imagined farm is, of course, *upstate*...)