Quote - Here is the gold preset in Lux Render, after 35 minutes of rendering using "unbiased" techniques.

Yeah, I don't really understand this "unbiased" thing, if I'm honest?

Surely there are still some kind of "heuristics" in there, on top of the purely mathematical "laws of physics" enshrined within the renderer code? Are they just less optimised... or what?

What's the deal??