Sometimes a scene may be about one thing and it may end up still being about that but the emotionality of it comes from somewhere else or the humor of it comes from somewhere else and it gives it that real-life quality.
If one tends to be a humorous person and you have a sense of humor the rest of your life then you can certainly lighten the load I think by bringing that to your trials and tribulations. It's easy to have a sense of humor when everything is going well.
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Political correctness? In my humor I never talk about politics. I was never much into all that.