What if there could be a phase shift in a network? Let us represent humanity as one gigantic network of conversations. This video speaks of a phase shift in structure rather than content, or rather in relationship of components, rather than the components themselves. If neurons are content, and dendrites connecting to one another are superstructure/relationship, then we can see in this video that superstructure is radically shifting as a result of the growth of internet, a possible phase shift in the very intelligence of humanity.
Then, there is a school of thought that says that intelligence and even thought content actually exists in the spaces between the dendrite connections, and that more content is accompanied by the growth of more connections, not more neurons. An interesting play to think about as you watch this video.