The Mandela Effect is one of those things that people seem to be on one side of or the other; you either believe that it is real, or you do not.
If you do not know what it is, it is when you remember things being different than how history claims that those things were. The phenomena got its name from the fact that some people remember Nelson Mandela dying in prison years before he was released; they even remember seeing his funeral on television.
Another pretty famous example of the Mandela Effect is how there are many people who remember seeing a movie with the comedian Sinbad where he played a genie (and they even give examples of scenes that they remember seeing, scenes that many people remember having seen). Sinbad has gone on record as saying that he was never in any such movie, and he does not know where people have gotten the idea that he was in such a film. The sceptics point to a film with Shaquille O’Neal where he played a genie as being what people are misremembering.
There are also countless other, little things that people remember that are different than how they are; they remember names of brands being spelled differently, or song lyrics being different, or popular children’s books having titles being spelled differently. But whether the thing being remembered is big or small, it is usually a surprise to realize that what you are so sure of is not how you remembered it being.
The people who believe in the phenomena theorize that what is happening is not people misremembering things; what is occurring is two (or more) different timelines merging into one timeline. When this happens, there are some people who remember how things were in the timeline that was absorbed into what is now the dominate timeline (so they remember Nelson Mandela dying while he was still in prison, instead of him being released and becoming the president of South Africa), while there are others who remember what history has said occurred.
It is a pretty interesting idea that something like this can happen (that two different timelines can merge into one, and that there are people who can remember things differently than they are), but it is understandable that there are people who are skeptical of such a thing; the proof that it is happening is rather hard to put your hands on (and can often times appear as nothing more than people misremembering things that have happened). But even if the proof is hard to come by, the fact that so many people remember things differently than how they are (and they remember things the same way) makes it seem like there might be something there. If there was a way to have physical proof of the things that are remembering differently, it might stop a lot of people from being skeptical of the phenomena, but such a thing is not likely to happen anytime soon. There will probably always be people who are skeptical of the phenomena being real.
Which side do you land on? Are you a believer or a skeptic? Do you remember things differently than how they are? Are you open to the idea that the Mandela Effect might be real?