Julia Gets Her Head Stuck in a Fence - S4-E8
Stupidity: Once he decided to finally saw into the banister, all Anthony had to do to get Julia's head out was to saw through one of the thin posts on either side of her head. Instead, he saws through an enormous section of the staircase, later causing the governor to accidentally fall through. If he didn't realise that, one of the other designers, all who were looking on, should have. It's a lot to presume they all would have been that careless just for the benefit of a sight gag.
Stupidity: As far-fetched as Matlock's stunts can be in most episodes, in this one you have one of the most egregious examples of something that would never stand. Here, The Witness confesses to murder under the direct threat of an attack dog that Matlock practically sic[s] on him, and nobody bats an eyelid about it. On top of that, the culprit and his associates are all legal scholars, as the episode itself more than once reminds the viewer.
Yomigaere! Eiyuu Densetsu - S1-E1
Stupidity: Despite being in training for 6 years at the temple to compete for a magical armor consecrated to a constellation and meant to harness the power of the Cosmos, Cassios and everyone else but Marin (Shaina towards the end) are mistified about the whole idea when Seiya uses it. What in the world have they all been training for, for 6 years, then? Shaina has to be the worst trainer ever. Cassios even calls it a 'superstition', but his master Shaina channels the power perfectly. It's like a Muggle working at Hogwarts and not believing in magic.