Factual error: Go to Cinnabar Island and go to the lab. There are people there who wants to trade Pokemon. Talk to one of them who wants a Raichu. Have a Raichu with you, and trade. After all the trading animation, talk to the man again. He'll say "The Raichu you traded to me went and evolved!". However, in fact, Raichu doesn't evolve into anything.
Factual error: In Cerulean City, there's a man that will trade your Poliwhirl for a Jynx. After trading, he'll say "The POLIWHIRL you traded to me went and evolved!". He may be referring that the trade evolved his Poliwhirl. While there are Pokémon that evolve via trading, Poliwhirl does not. This is a translation mistake from the Japanese Red/Green version, using the Japanese Blue text.Dr. James