Here’s something counterintuitive: a group of smart people can sometimes make a dumber decision than any one of them would have made alone. This is called groupthink, and it happens when people in a group are so focused on reaching agreement that they stop considering whether the decision is actually good.
Groupthink tends to happen in tight-knit groups where people feel pressure — spoken or unspoken — to get along and not rock the boat. Instead of genuinely weighing different options, people quietly drop their doubts and go along with whatever seems like the group consensus. The result is decisions that tend to be extreme, unrealistic, or just plain bad.
One of the sneakiest parts of groupthink is that unanimous agreement can look like confidence and strength from the outside — like everyone really thought it through and landed in the same place. But according to researchers, that unanimity often actually comes from individuals avoiding conflict and staying quiet about their real concerns, not from genuine agreement.
Groupthink also gets worse when everyone in the group comes from the same background or has similar experiences. When nobody brings a different perspective to the table, the group doesn’t explore all the possible outcomes — they just confirm what they already believed.
So what do you do with this? First, be suspicious of unanimous agreement — in your friend group, in a class project, anywhere. If nobody’s pushing back at all, that’s worth noticing. Second, if you have a doubt or a different take, say it. You might be the one person keeping the group from a bad call. The most important takeaway: when everyone’s nodding, that’s exactly when someone needs to ask ‘but what if we’re wrong?’