As above really.Can you sum it up in a sentence?
Or another way: you know that idea that light is the best disinfectant? This kind of argues that the technological world we are living in is claiming that while putting us through sustained white room torture.
The "dark age" idea is that we are already living in it, there's so much algorithimic information being used all the time in all sorts of ways we can't understand (we literally cannot understand, it goes into a fair bit of detail on that) that we effectively are in the dark on how the world works.