There is a common misconception that a plot hole is an idiot plot. Here is the difference: A plot hole is Bruce Wayne traveling all the way to Gotham, coming from the other side of the world, without any money, when Gotham is closed and isolated and the military watching over Gotham not able to see him. It is when something happens that the rules of shows universe deems impossible or illogical. Or if something happens that contradicts established events earlier in the storyline. Simple.
An idiot plot is Batman making a lot of effort in making a huge bat symbol made of fire on a bridge, when he is already racing against time. Characters doing something idiotic that conveniently gets the plot moving. The confusion might stem from the fact that sometimes they overlap to the point that the difference is a blur. It is when the screenplay mentions a reason why a character is doing idiotic things but the reason itself is either barely defined or breaks the rules the shows universe has established.
Example: A character is petrified by the colour red, yet always wears red lipstick.
Surprisingly, today's discussion is about plot holes. Claiming that Doctor Who has plot hole problems is a universally accepted thing, so much so that even diehard fans think it's a valid criticism. Now, a show about time travel cannot avoid plot holes, especially a show about time travel that has been going on for more than 50 years.
But the revived series have plot holes so easy to avoid it's hard to imagine that the writers didn't know what they were doing. The defeatist attitude of "who gives a damn?". A rule gets established in one episode then gets broken in the next. Sometimes it doesn't even follow its own rules from scene to scene. Let's be honest, did The Impossible Astronaut and Day of the Moon make any sense? Here's the ten biggest plot holes.