1. Systems Theory with Buckminster Fuller and Russell Ackoff. 2. Recursion, not just in programming, but in other parts of nature. 3. Memory and social size a

1. Systems Theory with Buckminster Fuller and Russell Ackoff. 2. Recursion, not just in programming, but in other parts of nature. 3. Memory and social size approximations, such as memory chunking in seven plus or minus two, and Dunbar's number.