incantrix posted at 5:27PM Mon, 17 July 2017 - #4310002

.... My main point with it is why is a single input into a mix shader adjusting the strength of that input. When to me it is designed to mix 2 inputs together to give a combined output...

Incantrix

Ah. I think that is because the mix shader treats the empty input as if it was black, or zero, and mixing that into whatever is in the other input. I could be wrong, but I think that is what is going on. :)