u/Independent_Let_3616

This is a bit of a meta-speculation, but a very simple one on what Scott might have meant by "the one retcon".

Scott said that the retcon

1. Is something that has contradicted the information established before according to the definition of his retcon

2. Was implemented seamlessly that almost no one noticed or didn't think about it as a retcon

This leads me to believe that the retcon was somewhat jarring of a change but written seamlessly enough for it to be easily hand-waved away by someone. I was wondering on what exactly could fit those criteria, coming to a sudden realization that doesn't seem to be talked about.

Could the retcon had been simply the motive of William Afton? William Afton in the first book of the Silver Eyes trilogy comes off as a melodramatic serial murderer with an obsession around Freddy's and believing that by his murders he grants children "Their happiest day" by killing them. With a delusional belief in that in some twisted way he is "helping" his victims.

This basically goes out of the window in the next books where he becomes a mad scientist obsessed with immortality, and the change is jarring enough for people to have noticed it, but still many merely handwave the change in behaviour and motivation as exploring William's character further. But it still seems like William does a large switch in his personality and motivations.

Could the retcon be as simple as Scott realizing that William as a delusional serial murderer might work for a trilogy of games but isn't good enough for an expanding series? Because of that he could have simply switched the personality a bit, contradicting William's earlier motivations but making it clean enough for us to just assume that William was just pretending or acting weird before.