Three examples are about education, trying to solve the difficult question presented on my Education website.
One is about the Green School System. In this excerpt an emotional discussion leads to an entirely different approach to class division.
Another solution to the same problem is used in the Social Tech Schools. The fictional Social Technology Organization which created these schools offered one solution, based on optimizing the ability of the individual classes to communicate. That is to say, each class represents an optimal social environment for all of its students where ability to communicate with others is the optimization criterion.
A different kind of excerpt is about a machine for education. Whereas a computer program is used, the machine is actually a set of interacting people.