I dont know where I land on the "its completely true" to "its all shenanigans" meter when it comes to the Mandela effect. But I can tell you it is pretty interesting and I can watch youtube video after youtube video showing examples of it. I do think our universe is pretty much a mystery to all of us but then again so is most of our mind and the human experience so who knows. Either way it is super fun and freaky to think about and experience.