Editor’s note: The following contains spoilers about the May 9 episode of “Young Sheldon.” Anyone who watched “The Big Bang Theory” with any regularity over its 12 seasons knew what was coming as its prequel “Young Sheldon” comes to a close, but the knock at the door that ended the most recent episode still felt like a gut punch. As the young Sheldon Cooper (Iain Armitage) prepared to head off to college, he and his family learned that his father (Lance Barber) has died of a heart attack, the... Read this story