User blog comment:CustardTheFreeBird/A Penguin's Guide to Discontinuity/@comment-26154899-20151126180225

In an issue of the CP Times after the Future Party, Gary mentioned future Protobot giving his past self a message to not attack the island in 4014, therefore preventing the attack from happening as past Protobot listened and never carried out his attack. Also, during the Prehistoric Party 2014, Gary only mentions the Forest being affected by time travel. I think the Ski Hill was just a regular renovation that conveniently happened at the same time the Forest was changed. Time traveling to prehistoric times, where you couldn't even access the past Ski Hill, probably isn't going to affect a shack added and a pole removed millions of years in the future. Just some things to think about. Those other ones (future Stage and Area 501) I've thought about too, but can't think of anything or find anything to back them up. Those both seem to be continuity errors.