The thing you can't let go of is gravity. The reality of gravity in writing. If someone says something really mean in a sitcom, and the next wave isn't a reaction to the reality of that, you start losing relatability. In a lot of romantic comedies, they throw out the rules of life.
“She's leaving when the president has one of the highest approval ratings on record. From here, it can only go down. And when it does, you know who they're going to blame. They're gonna blame Andy Card!”
“If we had a keen vision of all that is ordinary in human life, it would be like hearing the grass grow or the squirrel's heart beat, and we should die of that roar which is the other side of silence.”