The ones that bother me the most are those that alter distinct images and memories like the Sinbad genie movie dissapearing , the painting American Gothic , or the monopoly guy losing his monocle . In those cases as well the spelling and movie quote changes , I don ' t think that anyone is trying to cover them up it seems like if they were done deliberately by some group tinkering around with the spacetime continuum they would actually want to see how many people notice and how big of an effect it has on them before they try something really big with their new toys . If it was done by accident , or is something that those responsible want to try to keep under wraps , I could see them trying to cover their tracks by spreading disinformation and placing false effects in the public to try to discredit the whole thing and minimize the impact .