About how the human brain works. Why do smart people sometimes act illogically and recklessly? For example, do they spend time on secondary tasks, forgetting about the main thing? Loading themselves with work they can't handle? Every now and then they quarrel over trifles? Are they sensitive to criticism? It turns out that the cause of these and other problems is not only human psychology, but also the peculiarities of the structure of our brain, which cannot be changed, but can and should be taken into account both in work and in everyday life.