Humans sometimes work as individuals, but more often work in teams. Humans are very collective and strive for being and working together. We value team spirit very much. Most human works are done by teams. Here are few examples of team work: musical and theatrical performances, making movies, building houses, agriculture, science projects, engineering, manufacturing, computer programming, education, medicine, rescue works and geographical exploration. Some of our teams are hierarchically structured, and some are organized very uniformly and informally.
Check out "Ponedelnik nachinaetsya v subbotu" by Strugatskie for illustration of cooperation in scientific research.
Teams are united by common ideals. People work together because they want to achieve positive goals and they understand that only in team work they can achieve these goals. Working in a good team is a very rewarding and happy experience. People appreciate that team work can be very spiritual.