If I'm allowed to quote myself from another thread:
The biggest factor in the "Mandela Effect" is memory. And right there the whole theory or "effect" tumbles right down.
People think that memory is a black and white factual process. In their minds when they recall a memory they are basically calling up a file of a
memory and they flip the file open and read it as a collection of facts. This cannot be further from the truth. Every time you recall a memory you
basically reconstruct the memory from scratch. And every time you access (or construct) a memory something is changed in the memory. The basic
construct of the memory remains the same, but small details are changed.
And many, many, many more similar studies and facts supported by science
So, I'm sorry to break it to those that believe the "Mandela Effect" is a real thing - but your memory is fallible. And very much so.
There is an "ME". But it's not "Mandela Effect", it's "Misinformation Effect
It's basic neuroscience, not some woowoo absurd theory.
Let's consider the actual process (over-simplified): For example if one person claims - random example - "I recall the leaf of the Apple logo being on
the left hand side." It is such a small detail that you've never really thought about it. As you read the sentence you start constructing the memory
of the Apple logo.
And right there during the process of reconstruction is the moment of failure. As strong and amazing as the human brain is, it cannot store every
single piece of information - sensory or otherwise. So when you try to remember something that you have seen or experienced and should be in your
memory (but isn't) you reconstruct the memory from scratch with all available information. And what information was just presented to you? The leaf
being on the left hand side. Lo and behold you "also"
remember the leaf being on the left hand side...
And this will happen with the next guy and the next guy and the next guy that reads the sentence. But not everyone. See some folks would have
information available other than the sentence you were just presented with so they will clearly remember the leaf being on the right hand side.
See - it works perfectly with minor details that can easily be manipulated. Where people have knowledge of the subject, but won't have any information
available other than the statement that was just presented to them. Try the Mandela effect with something major?
"I clearly recall the sky being green."
People will call you silly because they have more information available to reconstruct the memory than just your sentence.
Show me an example of a major "Mandela Effect"? See. Confabulation.