An equal points voting system is the best way to come to the truth between a group of people, but they all have to be honest with their oppinions, which can make it fall apart if there are outside forces pressuring voters. If you have a jar of marbles and have a room full of people try to guess how many there are, the guesses will generally average out to the correct answer. If you had a group of marble and math experts guessing, then it would be extremely close, unless you let them debate about it first.