https://www.vice.com/en_us/article/ywypkm/a-vfx-artist-could-have-fixed-the-coffee-cup-in-game-of-thrones-in-15-minutes

Last night’s Game of Thrones was a tour-de-force of pathos and obsession. People died, queens drew up battle plans, and the people of the North celebrated last week’s victory. During that feast, for roughly 2.5 seconds, a modern day coffee cup sat in front of Daenerys Targaryen, Breaker of Chains, Protector of the Realm, Mother of Dragons, and Drinker of Lattes.

The reaction shot lasted less than a few seconds, but people noticed. Game of Thrones is an immaculately produced show with gorgeous sets and a budget around $15 million per episode. It takes a cast and crew of hundreds to create each episode and it’s hard to control that many people on set. Sometimes, someone is gonna leave a coffee cup behind by accident.