Now, if your panties are not in a complete, unknotable, wad, let's look at the matter a little more closely. Back up a minute.
Reincarnation is part of a worldview.
Many folks would love to think that reincarnation is a provable fact, but the data are clearly lacking. Let's just leave it as part of a worldview for a moment. For people in Tibet or India, reincarnation explains, for example, how one member of a family can demonstrate mannerisms, problem solving strategies, and aesthetic choices as an ancestor that he or she has never met. Often, these individuals look like the forebear as well. Based on such observations these people can predict with a fair degree of accuracy the basic course of the child's life, and such predictions, after all, are important.