Step 1: Extracting relevant evidence
Paragraph 5 states that "Schmoozing with a bunch of new people at a cocktail party is an opportunity to engage in light-hearted banter, and other people are grateful when someone is skilful enough to turn a stiff and awkward situation into fun."
Step 2: Explanation
This suggests that humour helps in navigating social interactions, diffusing tense situations, and forming alliances, making life easier and more enjoyable.