It has to make a little more sense for it to have any value. At least say, Your mom broke her leg, so shes slow. But, she knows which plants have medicinal value and which are poisonous. Your brother is healthy and strong, but all he wants to do is smoke weed all day. Etc. The way its presented, you have to make up the people, their attributes, the contextual circumstances. This isnt a geography lesson. Its creative writing.
But being put in a (theoretical) position where you have the power of life and death over another human being can be a great thought-provoker.