Human behavior must have occurred incentives. Or thrust. The pressure needs to be enough to motivate individual behavior to meet their own needs. The needs of each person is different.
Human behaviour occur there must be incentives or pressure propulsion as the pressure until enough to motivate human behavior occurs, in order to meet their own needs. Where an individual's needs are not the same.
human behavior, there must be an incentive or a mockery of pressure until the desired enough to motivate people to behavior to meet the needs of their own people, the needs of each are not the same.