Humanity's Fourth Age is AI - Time Machine 2019

Byron Reese, author and CEO of GigaOm, ruminates on what he sees as the three main technological events that shaped humanity:
First, our harnessing fire, which led to language.
Second, our development of agriculture, which led to cities and warfare.
And third, the invention of the wheel and writing, which lead to the nation-state.

Now we have arrived at the fourth event: The age of AI. What can we expect in this age and how will humanity be transformed?