It was essential because people will take the assumption a compound in cannabis could kill. Carbon monoxide can be traced to all burnable substances, yes, but cigarettes are directly associated. Tobacco is grown in radioactive fertz and has a direct correlation to cancers. Cannabis doesn't, and has compounds that prevent tumour growths. At this point were talking about [b]keeping[/b] something illegal because it [b]could one day kill one person.[/b] That isn't enough to justify your neighbours, or me, going to jail.