Friends’ Biggest Errors and Plot Holes in Throughout All 10 Seasons

No one is perfect — not even Monica Geller! Die-hard Friends fans have watched the sitcom over and over since its September 1994 premiere and 2004 finale — and eagle-eyed viewers have noticed some major plot holes or continuity errors over the course of the series.

Friends followed the lives of Phoebe Buffay (Lisa Kudrow), Rachel Green (Jennifer Aniston), Monica Geller (Courteney Cox), Ross Geller (David Schwimmer), Joey Tribbiani (Matt LeBlanc) and Chandler Bing (Matthew Perry) who lived across from each other during the show’s run. For the past two decades, the characters’ apartment numbers — only noticed by some — have caused quite a stir among the fandom.

In early episodes, Monica and Rachel lived in apartment 5, while Chandler and Joey across the hall lived in apartment 4. The staircases in the hallway and the apartment’s view signified that both apartments were on higher floors. So, the apartment numbers were later changed to 19 and 20.

That’s not the only error viewers have spotted. Keep scrolling for a complete breakdown: