In a very simple version of the “tipping point” theory, a new paper says that in groups of anywhere from 100 to 100,000, just 25 to 31 per cent of the group can set a new behavioural norm for the whole group. This finding is drawn from just one study using online participants, so its results shouldn’t be exaggerated, but it at least shows a consistent pattern in how a minority of group members can change the mind of a majority.

When you collaborate, it's nice if everyone on your team gets along, but there's a problem with agreeing on everything: No new ideas. This is also called "groupthink". To avoid it, don't be afraid to disagree.

Figuring out the bill after a group dinner is tough enough without having to cover those who left early and accidentally miscalculated how much they owed. Settle the dinner bill when they leave to avoid having to awkwardly ask them for more money later or overpaying at the end of the night to cover them.