Anything is possible I suppose. If we had the answer it would likely take the knees out from under virtually all religion. Maybe the price for sentience is an awareness of your own mortality and with that comes a need to believe. Seems to be a part of our internal wiring. These days we tend to couch it in scientific terms where for millennia simple belief sufficed. Still does for many. Some cultures accept reincarnation as fact and any suggestion it isn't would be considered unusual. There are some truly odd cases of past life memories and those fascinate me. James Leininger in particular. I found this Skeptoid episode and short article if you're interested: The Boy Who Thought He Was Reincarnated I'm normally a skeptical person but Brian Dunning is making a living from it and as a media content producer couldn't fail to come up with this assessment. He mentions a total lack of relevant education in psychology or any kind of therapy regarding some who wrote books on the topic - and he might be correct in that. But it applies to him too - I hadn't noted that he had any either. If we want to be truly skeptical and consider the source, Dunning was convicted of wire fraud about ten years ago and slapped with a prison sentence. I don't know how much, if any, of that he served but it financially ruined him. My point is that his skepticism and critical thinking - something in short supply at times - is paying his bills. If he found Casper the Friendly Ghost in his underwear drawer - for real - he'd probably deny it for his own personal reasons. There is a lot of head scratching around that Leininger case and I don't think it can be so easily dismissed.