As Johnson describes, emergence is what happens when an interconnected system of relatively simple elements self-organizes to form more intelligent, more adaptive higher-level behavior. It is a bottom-up model rather than being engineered from top-down. Emergence begins at the ground level when agents residing on one level start producing behavior that lies on a scale above them.
This is exactly how I envision deep changes coming about in today's world. That is, largely through grassroots collaborative movements springing up as more people begin to remember who and what they are (as spiritual beings currently having a human life on Earth). As this happens, we will naturally outgrow deeply entrenched social divisions.
Interestingly, this is also one of my core music concepts in how I envision ensembles going beyond what is written on the page to create music collectively that is fresh and different each time it is performed. I have had this vision for many years and now there is a word for it.