That was very well put, Laurie. Oh, and I certainly didn't mean to imply that I've actually mastered anything, either! Far from it. That's why I started the Nodes for Dummies thread, and whilst I've had a lot of exposure to material room and shaders since then, creating a shader like BagginsBill does, in his head -- because he knows how to say "Physical Property of x" in Poser's language, mathematics -- is still out of my reach. It will come eventually, because I'm like a dog with a bone... which is my point.
With Poser, you really gotta wanna... Poser isn't giving anything away for free.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks