text: It's just better to ask multiple people for their opinions then one person. If you only ask one person, you might get a biased answer. If you ask multiple people, maybe a few are biased but you've still got a few other who won't have a biased answer. When your doing a experiment you do many trials because one might mess up, and if do a few trials one will succeed and will have a precise answer. It's the same thing with this that you need more than one opinion and that if you want a precise answer.