I understand that those Nalgene water flasks that you used to carry around as a Boy or Girl Scout are now cool with urban-wilderness folks. What does that mean? It means that this particular brand of ordinary but nicely designed water flask is impossible to find right now and the company, based in Rochester, has hired people to produce the little plastic flask 24 hours a day to meet supply. Is this a Tipping Point phenomenon? Why the demand, because the plastic used in this flask leaves no plastic taste to the water and can’t be eaten by bears. I think I should sell mine on eBay, where they seem to be selling like krazy. I found this story in today’s Globe and Mail, where you can find more.