Of all the PLM cases I've read, the duration between the death of the previous personality and the birth of the child varies widely, as expected. In Eastern countries, it seems to be much shorter, ranging from less than a month at the low end (which seems to defy logic, given the requisite gestational period) to a few years on the high end, than in the West, where it skews higher to at least several years and often decades. However, almost all cases seem to have died within the past century or so, and while rarely you'll encounter one that stretches back up to a couple hundred years, there seems to be a hard cap somewhere around this point. Why do you all think this is? I'd like to hear some possible explanations. I always thought it would be extremely cool if a case popped up of a kid who had lived in an ancient civilization and knew some of the language, e.g. Egyptian; it would be an incredibly useful resource for historians and linguists, but it just doesn't seem to be possible. Why not? Is it simply that it is possible theoretically, but in practice, no one who decides to reincarnate ever waits that long to do so?