Yes, we should ban knives.

But before that, we should ban sticks and rocks! Because those have been used to kill more people, and if we take away knives, then people will just go back to the old stand-by.

But before that! We should outlaw Di-hydrogen-mon-oxide.

• This deadly substance is the number one ingredient in acid rain.
• The absence of this substance has caused countless deaths.
• In its white-solid form, it has caused numerous traffic fatalities.
• Wars and feuds have been started over this substance.
• Most people are addicted to it without even knowing. Withdrawl is both painful and totally unnecessary.
• ...