1. Yes, that's why I put "light pollution" in quotes with a clarification, because I wasn't using it in the sense it's generally used (the kind that affects you

1. Yes, that's why I put "light pollution" in quotes with a clarification, because I wasn't using it in the sense it's generally used (the kind that affects your ability to see stars), and describing a different mode of pollution (of pockets of light that leave other areas much darker and thus hard to see because of the high contrast). 2. Hence the last paragraph of my original post, that you do need some minimum level of light. I was specifically speaking about conditions above some minimal threshold. Is there a better way I could have said either of those things so you wouldn't miss them?