That's trends in percentages - not absolute numbers Makes perfect sense that. If there are more smokers than vapers (which there will be historically as vaping

That's trends in percentages - not absolute numbers Makes perfect sense that. If there are more smokers than vapers (which there will be historically as vaping is new and smoking is old) - then a few switching to vaping will cause the smoking like do drop a little, and the vaping line to go up like a rocket. i.e. If there were 100 smokers and 10 vapers. Then one of them switches. Smoking has gone down 1% and vaping up 10%. Plus doesn't seem to include relative harm. I'd have thought it would take a large number of non-smokers taking up vaping, to match the harm-reduction of one smoker switching to vaping.