(Guardian) - The Everest deaths show it's hard to balance liberty and safety, but a report suggesting half a glass of wine a day goes too far.A couple of experts have just been on the radio warning against a dangerous growth in addictive behaviour among adults in western societies, much of it including internet gambling, porn and gaming, deliberately designed to be so. At the same time the Daily Beast is reporting excitedly that other experts are telling us not to drink more than three glasses of wine a week.