@c0debabe @RadicalEdward en.wikipedia.org/wiki/Project_management_triangle

> The project management triangle (called also the triple constraint, iron triangle and project triangle) is a model of the constraints of project management.

It's more broadly used in computering but the overall 'you have 3, pick 2 cuz thats all you get' holds up way too well for all things technical.
Project management triangle - Wikipedia

@kemonine @c0debabe @RadicalEdward I once had a PM who drew a seesaw with scope at one end and resources at the other (explaining how we could stick to our delivery date). I spent ages failing to explain the quality problem to him