What makes you trust one person yet not another? I mean "really". Here's how I, a Newbie, see it. What makes one person's "word" believable? Remember that saying, "A person's only as good as his word"? My Dad always said that when I was growing up, and my husband says it to our two sons. I grew up on a dairy farm in the Midwestern United States. Often in the evening when my Dad and brothers were done with the "after-supper" chores, salesmen would often come. My Dad invariably knew them by the.