Neuroscientist explains why even smart people make foolish mistakes

The human brain is considered the most complex biological system known, yet that very complexity is also the source of countless everyday thinking errors. In a new episode of the interview series 'From the Other Side,' neuroscientist Ainārs Stepens addresses why even intelligent, rational people occasionally make decisions that work against their own interests.

Why the brain deceives itself

According to the topic discussed, the brain regularly distorts memories, causing people to recall events differently from how they actually happened. It also tends to exaggerate threats, producing more anxiety than a situation objectively warrants, and can lead people to believe things that do not match the actual facts. These tendencies can result in decisions that run counter to a person's own interests, even when that person considers themselves rational and level-headed.

The evolutionary paradox

One question raised in the conversation concerns evolution: if errors in thinking can harm survival and well-being, why hasn't the evolutionary process produced a more rational, less error-prone brain. This question points to a broader discussion of how the human brain developed by adapting to survival in changing conditions rather than to ideal logic.

Where normal ends and disorder begins

The conversation also touches on where everyday thinking errors, common to all people, end and where a more serious neurological disorder begins. This boundary is often not easy to define, and understanding it can help distinguish ordinary cognitive quirks from conditions that require medical attention.

The piece is part of the 'From the Other Side' interview series, in which experts from various fields share their perspectives on current topics.