I’m good at suspending disbelief for a bit of hokum, and most recognised TV and movie tropes don’t really bother me. But there are a few that bother me because they manage to combine several faults, such as being massively implausible and truly ‘we couldn’t care less’ insulting to the reader or viewers’ intelligence and just a big waste of time.
A simple, very common example is this: the good guy is stealthily exploring the bad guys’ lair. He notices a couple of ‘guards’ coming his way so he quickly ducks back, flattens himself against a wall and keeps still. The ‘guards’ walk past and the hero can proceed with his mission. Okay, so, first of all, this ‘plan’ would only work if he had omniscient awareness of where these guards were going to go or not going to go. Secondly, everyone has some peripheral vision and awareness, so the guards would not just walk past. Thirdly, given that we know the ‘guards’ are just going to walk past, and the hero will be able to carry on, isn’t this just a big waste of a minute of screen time? It’s not suspenseful or plausible, it’s just a minute that could have been spent showing us something interesting.
One that quite often crops up in literature is poor description of the physical layout of a given location when this is crucial to the plot. In some stories, especially crime stories, it might be very important to understand the exact layout of several rooms in a house, say, or the exact configuration of various passages and where they lead. Yet some authors offers very poor descriptions of the kind that are only clear to someone (e.g. the author) who already understands the layout he is trying to describe. G.K. Chesterton was a great writer and the Father Brown stories are deservedly praised, but in many of his stories he fails to give good descriptions of physical layout when this is actually crucial to solving the mystery.