This is nonsense. We are, inside ourselves, a lifetime of experiences and events that have already given us all the information we need. A bad idea or a bad person is not going to improve with the passage of time. If anything, time reveals how deadly accurate our first impressions are. The only thing time does is give you a chance to build up a set of rationales, excuses, denials about truths you already know.
First impressions are true impressions.
Learn to trust them and learn to shut out the voices which tell you the decision is being made too quickly, with not enough facts, not enough experiences. Life will become much more simple and much more honest. Simple, because we won t waste precious time hanging on to people and ideas which will never work for us, no matter how much we try and believe differently. Honest, because without the need to put blinders on when meeting another, we don t have to pretend anymore. We can say and be what we are and if someone fits in there, fine.