text: Another reason why people should seek multiple opinions is so that it is not biased. Going back to our first example, if that first opinion had been biased, how deep into trouble would that kid had been in if they went to the movies. Furthermore, that is from a kids point of view. What if someone wanted to make a business deal with someone else that's worth around a million dollars, and their colleague tells them to not do with that company. Well they want the deal to be perfect, since so much money is on the line. So they want to make sure the advice is actually based on cold, hard facts not flimsy opinions. That is why you should take advice from multiple people not just one. Whoever is getting advice can also cross check with someone else and see if their advice is actually worth it. Just because someone trust someone else a lot doesn't mean that they are right.