#1 In the episode"I Dated A Robot"the professor said that there are only two parallel universes.and in the episode The Farnsworth Parabox he discovers like 50 parallel universes.
#2
in the episode "Crimes Of The Hot" when the professor confesses about how he created a polluting robot "75 years ago" he is supposed to look 86 (161-75) but he is shown just like when he was 53 in the episode "Teenage Mutant Leela's Hurdle"s with red hair and very little wrinkles.
i will contribute more later on
i would appreciate it you would contribute