Hi, builderofcastles. Nice to meet you. This is going to be fun.

Well, unfortunately, you are incorrect, by a very obvious fact.

Group A remembers it one way.
Group B remembers it another way.

If it was, like you stated, a lack of accurate memory, then there wouldn't be any groups, it would be a splatter graph around the "correct version".

The great majority of Mandela examples aren't in the format you just described. There are no groups. Instead, it's like this:

Step 1: Introduce a common misconception.
Step 2: Point out what will be found on verification.

1. Do you remember Berenstien Bears? 2. Berenstain Bears?

Alas, I remember it being not an easy word to pronounce, one that everyone seemed to correct me on no matter how I pronounced it.

But, that is not the case.

As I've just pointed out, it's not the case as you just described. Did you just teleport in from another universe? lol

That there is a very large group of people that distinctly remember something different is entirely out of probability that it was error.

Or that a specific monkeywrench is responsible for it. There's a metric assload of ways to screw with memory, but as with all things related to memory you can group the monkeywrenches according to the process they screw with: encoding, storage, and/or retrieval.

Now, the stupid penny...

Coins, to most people are meaningless chunks of metal.
No one knows or cares what is on them.

The fact is that we humans aren't very observant as a whole. Most people don't study things to make sure we create an accurate mental representation.

Further, the image you gave from the psyche book, several of the images are correct... as long as you weren't specific on the year. So, you are asking something only a numismatist would even know.

Only a coin specialist would know what a penny looks like? Is it too much to remember the placement of less than 10 words within a circle, especially given that pennies are extraordinarily common objects every one of has seen thousands of times?

Given that you have just admitted that you can't remember the details of something you've seen thousands of times, it's also logical to admit that your memory is terrible.

Lastly, one more piece to disprove your suggestion that it is all a failure of memory.

In many of these cases, i remember two sets of pasts.
Yes, you read correctly, i remember what group A is saying, and i remember what group B is saying.

You can remember as many different ways as you like. It's not like there's a magnetic tape that stores a specific memory at a specific time and that is the only one true memory of any event you will ever have. With a bit of hypnosis, you can be made to remember that you were a knight that saved a beautiful princess, and also that you were the princess being saved.

And so, let the understanding of multiple universes commence.
Science will just have to throw out their books and start anew,
on a new frontier.

That'll teach your inaccurate preconception about "science!" You tell it like it is to your imagination! :)

:: imaginary high five :: yeah!