Lights Out San Francisco promises to darken SF's nighttime sky on October 20th with a coordinated turn-off-your-lights campaign that continues this week. The city has signed on. So has the Golden Gate Bridge. What do you think, SF? Is this a bold environmental statement, or a crackpot idea cooked up by post-luddites who wear tinfoil hats? "Eww, light pollution!" And does anyone actually think it's going to be darker in SF from 8- 9 p.m. on October 20? Isn't sunlight still kinda out at that hour? -David Downs