This may seem silly, but as a self taught guy who got most of his photographic schooling in the digital world, then in slides, I'm amazed by the concept and the utility of "overexposure" in C-41 and now in the practical use of filters.
The narrow exposure range of the media I was using, being able to adjust WB, and having to protect the highlights has been reinforced so much that it has been hard for me to wrap my head around why anybody would cut the speed of a film on purpose or even use filters.
The thought that one color could be underexposed had never crossed my mind as the reason for problems in noise and color casts. Don't get me wrong, I KNEW that was a problem, I could see the problem, I just didn't get it.
Viva film, viva APUG. Thanks all.