text: Having multiple opinions makes the person more knowledgeable about what they are seeking advice for. For example if you were thinking about buying a hand soap, you would probably ask for advice before you bought the hand soap. If you asked a friend that had received a defected bottle, they may tell you that the product is terrible because of their experience with the product. But if you ask another friend who had a great experience with the hand soap, they will probably tell you how terrific the soap is and how beautiful it smelled. The person that had a bad experience will be biased to say that the product is bad, but the review is the opposite for the person that had a great experience with the hand soap.