I might have liked this book better than the first. I'm still confused, if it's actually interesting and thoughtful with regards to it's themes, or a bit preachy and says nothing new. I mean, I've followed the vlogs of the author for years now, so I suspect I've gotten his views in that format and that's the reason it seemed "already known".
I was pleasantly surprised about the explanations of Karl, the whole first book I was worried that the explanation wouldn't live up to the hype, but I think it it was quite cool.
It's relevant to our modern day, and even though it is science fiction, it feels more like a contemporary story. A bit less than the first, but still does.