Corrected entry: When the office is hyped up on espresso, they try to move the copier to the annex, consequently ripping up The Carpet. Oscar says that he always knew there was hardwood underneath but never thought he'd live to see it. This contradicts Season 7 Episode 23 when Dwight shoots a gun into the floor, and Oscar is offended that they would have covered the beautiful hardwood he noticed under The Carpet when inspecting the bullet hole.
Corrected entry: When Wallace calls, Dwight asks why Wallace would call when the manager is out of town. In a later episode, Wallace claims to be ignorant of Andy leaving Scranton. (00:01:55)
Correction: Dwight saying that Andy is out of town, David Wallace may have just assumed Andy was out for the day and not necessarily for three months.
Correction: When he initially sees the hardwood floor he can only see the bullet hole through wood, he doesn't actually "see" the hardwood floor until The Carpet is ripped.