A chain of trust - aka a local village, is not always just the historic medieval village. Often it is just a experience value: I know that guy, i trust his/her

A chain of trust - aka a local village, is not always just the historic medieval village. Often it is just a experience value: I know that guy, i trust his/her judgement when it comes to "topic". So when s/he recommends me a plumber, i know i can trust that guy.. So a chain of trust naturally accumulates over a lifespan- and by the time you will be as old as your dad was at point of reference, you actually would have a chain. Depending of course on the quality of acquaintances. As kid, all you have is your parents and relatives. Some with wild swings. We all had that story telling grandpa whose tall tales we proudly propagated.