Is there a Starbucks cup in your succession plan?

On May 5, Game of Thrones viewers were amused to discover a Starbucks coffee cup had found its way into Westeros, the fictional continent where most of the HBO series’ action takes place.

How in the world, fans wondered on social media, did everyone who worked on the show fail to notice the errant cup before it was too latte — er, too late?

As all of us do on occasion, the Game of Thrones actors, director, editors and others who work on the show overlooked something that was right in front of them.

Unfortunately, more than a few family business leaders have pronounced their succession plans ready for prime time without noticing a problem that should be obvious but mars the big picture. Examine your plan carefully to check for these “Starbucks cups.”