Houston
>>Which bit of the following is confusing you "so that the incidence is reduced (since it is impossible to guarantee that it will never happen again)".<<
I don't agree with your assumption that reducing options for all of us will somehow "reduce incidence". It just shifts the mechanism to things like fire or poisoning for people who want to cause harm. You need to alter human nature if you really want to reduce incidence IMHO.
JR
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1