The whole "Mandela Affect" can be explained by the memory having a sort-of 'autocorrect', combined with your memory not bothering to remember trivial shite properly, instead just remembering key points. These key points mean you extrapolate the memory, filling in the gaps in the most logical manner, but sometimes the most logical version isn't the correct one. C3PO had a silver leg! Who gives a fuck, there's so much going on you never noticed his leg, who gives a shit about the leg. The Apollo 13 quote "Houston we have/we've had a problem" - really? You misremembered 2 words, who gives a shit, it's not important, why the hell would you remember that? Loads of them are related to spellings of products and it's almost always the ones that have weird spellings. Again, it's the brains autocorrect at work. r/mandelaeffect is always good for a laugh, although its often not clear who's for real and who's just trolling.