You're over there in the corner either thinking about the dead dog or whatever, you're bringing up your personal life and you need the space, and then somebody throws you a joke. Especially if it's an emotional scene, you don't want the joke.
Realism is always subjective in film. There's no such thing as cinema verite.
Filibusters have proliferated because under current rules just one or two determined senators can stop the Senate from functioning. Today, the mere threat of a filibuster is enough to stop a vote; senators are rarely asked to pull all-nighters like Jimmy Stewart in 'Mr. Smith Goes to Washington.'

