Michael Gazzaniga, one of the most respected neuroscientists of the 20th century, talks about his seminal work studying the incredible pairing of the right and left hemispheres. One of the fathers of cognitive neuroscience describes how the revolutionary split-brain theory was born, in which the right and left halves of the brain, after being separated, begin to function independently of each other and display completely different skills. Gazzaniga is convinced that the popular idea that science is done by lone geniuses is wrong. His stories show the human face of science: it is driven by friendship, it is the result of numerous social interactions between a wide variety of people, often taking place outside the walls of laboratories and offices. The publishing design is preserved in PDF A4 format.