I agree; this is how I've understood the terms for as long as I've been aware of and used them. The lack of light = black, and light which includes literally a

I agree; this is how I've understood the terms for as long as I've been aware of and used them. The lack of light = black, and light which includes literally all colours = white. When light is "blocked" from passing, black. When light is "allowed" to pass, white. I look forward to seeing what other concepts can be mutated to make a point on unrelated topics.