Human interaction can sometimes be quite complicated. Passionate debates on the Internet, outbursts of anger in the streets, tense conversations with our loved ones. Arguments can be exhausting and often very unpleasant. In a world where everyone has to have an opinion on everything, ordinary conversation can sometimes become a minefield. Can we disagree with each other respectfully? And can we find something positive in an argument? This episode is part of the science series 42: The Answer to Almost Everything . The title is inspired by the book The Hitchhiker's Guide to the Galaxy and the number 42, which is supposed to be the answer to all questions.