It’s in our blood: kind gestures are evolution’s gift to humankind. If it hadn’t been for kindness, the story of our species would most likely have taken a very different turn.
It is evening. Valentine, the main protagonist of Krzysztof Kieślowski’s film, Three Colors: Red, leaves a theater in Geneva, and watches for a while as a bent, elderly woman struggles to deposit a bottle in a recycling bin. Valentine helps her. The bottle scene also appears in the two previous parts of Kieślowski’s film trilogy, but in in neither of them does the elderly person receive help. In the previous film, Blue, the protagonist fails to notice the elderly woman, and in White (where instead of the woman, an elderly gentleman appears) the main character watches the man’s struggles with a cruel smile. Only Valentine reacts. “In a sense, that single, simple act of kindness is the climax of the entire trilogy,” wrote American critic Dave Kehr in his 1994 review for the New York-based journal, Film Comment, calling what Valentine does, “the gesture that saves the world.”
Yet according to sociologists, there is nothing extraordinary about the fact that we help each other. On the contrary—refusing assistance is rare, especially when it comes to simple gestures such as holding the door for someone, making tea, or throwing a bottle in a trash can, the type of gesture featured in Kieślowski’s movies. “Prosociality and cooperation are key to what makes us human,” says Giovanni Rossi, a sociologist from