It seems strange to talk about PMF like it is a measurable, binary attribute. As a metaphor, I like the word "traction". It makes me think of a car tire or a sh

It seems strange to talk about PMF like it is a measurable, binary attribute. As a metaphor, I like the word "traction". It makes me think of a car tire or a shoe that is slipping around and then grips. Also, traction can be lost and on its own it doesn't do anything for you, but you can use it move forward.