The extra material becomes available to construct evolutionary novelties. Redundancy enables additional or new functions. If an organism does not have sufficient variety in its own resources, it must be part of a larger ecosystem, with which it must have permeable boundaries. It is the number of possible connections that influence the ability to innovate through new combinations. Variety provides possibilities for innovations through new combinations.
Human beings have self-awareness and ego.
They work hard to preserve and enhance their identities. Human beings and organizations seek to understand the conditions that will lead to their improvement and evolution in order to deliberately create these conditions. When people are aligned towards the broad goals of the organizations, when they have common values that they share, cross boundary teams bring changes. By setting their own goals aligned with the broader one, they are pulled together and onward, like by a magnet. Around year 1000 it took 200 years, around 1850 it took 30 years, today it takes about 5 years.