All people are different from each other. This fact seems so obvious that we rarely think about why this is actually so. Why is it that some people are night owls and some are early risers, some like sweet things and some like bitter, some like men, others like women, and others fit tightly into conventional gender categories. Neuroscientist David Linden assessed the extent of human diversity by studying profiles on a dating site. There, as it turned out, people are especially willing to describe their characteristics - from hair color to food and sexual preferences, from household habits to allergies. “Why People Are Different” is an attempt to describe in one book all the facets of our uniqueness. Linden talks about genetic variation and environmental influences, from the womb to adulthood, about learning and individual experience, about immunity and chemical receptors, because of which there really are no mates for taste and color. And although you have never doubted your own uniqueness, you will still be fascinated by learning how difficult and unpredictable the path that you had to go through for it was.