Plot hole: In 'The Foretelling', it is said that Richard IV reigned for "13 glorious years" with a caption showing 1485-1498. 'The Black Seal' starts on St. Junipers' Day, 1498, but Blackadder spends 12 months locked up with Mad Gerald. So when the Royal Family are finally murdered it is actually 1499.
Plot hole: People are always told to not use their mobiles while in the hospital. However, the staff constantly use theirs.
Plot hole: Matlock figures out that The Professor wouldn't have been able to see the security guard from 50 yards without glasses, and that's what tips him off about The Conspiracy: the guard testifying that the man wasn't wearing any. However, when we see the scene happen at the beginning of the episode, the person posing as Prof. Erskine Tate is, in fact, wearing glasses. (00:04:15 - 00:22:15)
Testing, Testing, 1...2...3...4 - S7-E20
Plot hole: Gwen Taylor tells her Bar prep instructor, Tony Henderson, that she does not have a law degree and that she has been apprenticing. This would indicate that she did not go to law school. But in 6-01, she tells Leland McKenzie that she was accepted to Loyola Law School and that she was thinking about going. Leland convinces her to go. In multiple episodes, it is made clear that Gwen is attending law school. Frank Kittredge helps Gwen understand the famous Palsgraf case, as well as the principle that came from it, "proximate cause." Additionally, Arnie tells Gwen that she will need to pick between her job and law school. Additionally, while sitting in on a staff meeting, Gwen asks if it's a bad time to discuss "res ipsa," which is a reference to the legal doctrine, "res ipsa loquitur," a torts principle that came from the case, Byrne v. Boadle (indicating that she was taking a law school torts class). There was no indication that Gwen left law school for an apprenticeship. (00:29:40)