This document discusses the concept of learning throughout human history and proposes that learning is the defining characteristic that connects all humans. It describes how humans have used learning to adapt and progress over centuries, from leaving caves to build shelters, to challenging authority and exploring science and technology. The document suggests that in the 21st century, areas of focus include nanotechnology, space exploration, cloning, and artificial intelligence. It argues that while learning connects humans, it can also cause relationships, conflicts, and social connections like family and friendship. The document proposes two techniques for learning - "Think Circumstance" which creates hypothetical scenarios to solve issues, and "Multi Hat" which requires considering different perspectives.