Just a Simple Question about
It looks like groups forms them self's by "little" proprieties that differ from others.
In the perspective of the specialization, we can see how deep each detail of knowledge is.
Is always a new world, while all together represent ... "the subject" ... "the discipline"
If all groups of one single "discipline" get together to put all their knowledge in one single place, all can learn together about everything they already know and about all other subsubjects, other considerations
Sometimes groups create new groups, but in Time they all "work" together, since they are all focused in the same direction.
And the question is: why did i made such question?