One of the most important things to remember about infant care is: don't change diapers in midstream.
When a man tells you that he got rich through hard work ask him: 'Whose?'
You do have to change things as warfare changes.
As a writer or as a filmmaker you have to present yourself and part of what yourself is is what you're interested in or what you think is funny or what you think is sad or what you think is horrible.