Smoking kills half of long-term smokers. Rare conditions like this need to be recognised, but there is no comparison : vaping is far less risky.

John Britton

John Leslie Britton was an English mathematician from Yorkshire who worked in combinatorial group theory and was an expert on the word problem for groups. Britton was a member of the London Mathematical Society and was Secretary of Meetings and Membership with that organization from 1973-1976. Britton died in a climbing accident on the Isle of Skye.

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