Delphic Maxims #7:Perceive what you have heard

So this is the last one of this month and it's Perceive what you have heard. What does that mean? Well I'm going to take a crack at it. When you hear something it's natural to just assume that you know everything. However, there's always two sides to everything and you must listen to both and then decide which one is telling the truth. Don't just take people's word for it.