[ivanhoe]

You never had a memory of some childhood event that feels super real, and yet you're positive that you couldn't really remember it - you've just had that memory implanted as a result of hearing the story told over and over by your parents or older siblings? There's also a solid body of evidence that this can happen sometimes to adults during police investigations when innocent people start to actually believe that they've actually committed the crime. When such double memories are encountered that can be very disturbing experience to a person, it feels like going crazy, as you don't know what is real. Our minds are fragile systems and under pressure some personalities start to decompose relatively quickly so I'm pretty convinced it's possible to drive someone insane that way.