[Broken_Hippo]

Sir, would you rather sit by this nice, blue light or here in this stuff that feels warm like sunlight?

Sure, you can do that with the blue light, but if that were truly an answer, the blue lights would be standard in fixtures instead of a bit of equpiment for greenhouses, fishkeepers, and those with seasonal affective disorder.

Sunlight simply feels different, in the same ways that a fake fire can feel different from a real one. It is warm and inviting for most people, it heats the skin in ways normal light doesn't.

And as far as texture, I'm not sure if I can explain this properly, though I can see it and draw it in: Sunlight makes the skin's transluscence light up a bit differently: Sometimes it wavers and moves depending on what is in the air and whether or not there is a temperature difference between the inside and outside. Sometimes dust sparkles slightly as it drifts in the air. It creates a different glow than artificial light and the shadows are different - the light is steady and more diffuse because the light comes from a general direction instead of a point.

I do understand that some of this stuff are things that people just don't think they see but they are the things that help make a painting spectacular instead of just good.