> But I don't know whether he has the level of expertise (or general > scientific knowledge, which can be considered expertise) that's > required to find and understand as being relevant what you can find > in 10 minutes I think we'll have to agree to disagree about that particular page. It says to me "Fireworks are pointless pollutants, ban them all now". Yes, it's his opinion, but it's not a balanced page. If I were to take the trouble (which I won't), I daresay I could produce either a completely opposite argument or a point-by-point pros and cons People (New Agers specifically) I've run into in the last couple of weeks have obviously made me biased against what are loosely termed "crackpots". As I've tried to explain to one lady, who has the "Science is bad" attitude, lobbyists for any cause use selected information to promote their own agendas. In many cases you can follow the money to see what they're really hoping to achieve (eg selling crystals, crop circle calendars, all those "wonderful cancer- curing gizmos, Browns Gas generators etc) I just get annoyed by hypocrites and quacks. Thankfully the PIClist is a fairly balanced group. Maybe we balance each other ? I know my deductive and investigative powers and patience have been improved no end by being here -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist