Sometimes, my opinion on a certain topic will change because of information introduced by a trusted third party.  For example, I respect my dad's knowledge of money, so if he tells me it's a good idea to do a certain thing with my money, I'll likely follow his advice.  It's the same with my sister and parenting.  She probably wouldn't actually give advice, but my opinion on parenting changes as I watch her with her kids. 

However, sometimes my opinion on a certain topic won't change regardless of information introduced by a trusted third party, largely because my opinion on the topic is stronger than my trust in that person.  For example, my opinion on drunk driving is that you shouldn't even take a chance.  I'm usually more careful than I legally need to be, but I'd rather be careful than lose my license.  So if a person I respect drinks and drives, my opinion on the topic doesn't change.  Instead, my opinion of the person changes. #psychology