I think that's fair, but to a heavy smoker living on a pack a day, I indeed would recommend total abstinence for ideal health - not merely reducing to half-harm. Though it may seem like the softer reduction approach would be more supported, I believe it only serves as a mechanism for the smoker to lose control and relapse again and again. It is a subjective philosophy, so I don't expect we'll totally agree, but I thank you for the discussion.