The Famous Fire Analogy
Two men are standing outside their respective houses.
Unfortunately for the two men their houses are on fire.
Each man has a wife, a beloved pet and a TV (they are minimalist).
Out of the two men, one of the man's wives, let call him Man 1, has already evacuated his wife. Man 2 on the other hand, hasn't.
Out of the two men, which one would you imagine is more prepared to charge into the flames?
Now, is it far to say that the newly introduced Man 3, who has got both his wife AND his pet out of the house is even more likely to charge in?
Transfer this over to the AV voting system.
Who has most support, someone voting for their first choice (wife) or someone voting for their second choice (pet) because their first choice is now out of the picture or someone voting for their third choice (wardrobe) because their first and second are out of the picture ?
Would it be accurate to Man 1 cares no more about charging the flames than Man 3 does? I don't think so and when the Fire Department turn up I know where any non bias person would send them first.
1st preferences count more than 2nd , 2nd count more than 3rd. Any system that does not recognise this, does not accurately measure support.