Award-winning television shows always seem to have unexplained plot points. For some reason, the greatest shows refuse to answer the questions fans want to know the most. These grave oversights in storytelling aren't exclusive to TV either. Some Oscar-winning movies have unexplained moments as well.
Sure, there are a ton of shows where characters live above their means. But those inconsistencies are examples of TV tropes, not glaring plot flaws. Adding a new character in a series finale without outlining who they are or where they come from is a better example of an unexplained TV show moment. These occurrences are way more frequent than you might think.