The Emperor’s New Mind
This book took far longer to finish than it should have. This is in large part due to the silly conclusion Penrose tries to reach, which just makes my brain bleed.
The thesis of the book is simply this:
- Consciousness is not deterministic, therefore the brain works
It starts promisingly enough, with an explanation of Turing machines, computability, and the Turing test. Having explained these concepts, Penrose then tries to argue that the brain is, in fact, not a deterministic Turing machine.
Central to this claim seem to be the Chinese Room experiment and similar thought experiments (which I’ll grant can be difficult to grasp properly), and various minor things like “flashes of insight” (which clearly can’t be explained deterministically!) and whatnot.
Fortunately, he quickly abandons this line of reasoning and starts talking about mathematics and quantum physics for a few hundred pages. I’m not sure why he does this, since neither has any relevance to the subject at hand, but I’m not complaining.
He tries to return to the brain in the final chapters, but he just makes an ass of himself in the process.
Penrose doesn’t understand psychology, physiology, fetal development, evolution or natural selection (at some points coming perilously close to endorsing ID), the (often counter-intuitive) capabilities of actual computers, or cognitive science, but he tries to venture into each of these fields to make his point and fails spectacularly.
His whole point is essentially a giant, infuriatingly dense argument from incredulity and personal pride (the human brain can’t be a deterministic Turing machine, that would make it too common!), and his attempts to involve quantum physics are more reminiscent of Deepak fucking Chopra than of a theoretical physicist of Penrose’s stature.
Now, does this make The Emperor’s New Mind a bad book? Well, yes. Let me rephrase.
Does this mean The Emperor’s New Mind isn’t worth reading? Absolutely not.
Like I said, most of the book is just seemingly irrelevant stuff about mathematics and quantum physics, and it really is quite interesting. It’s worth keeping in mind that Penrose isn’t just some random woo artist, but an accomplished mathematician and actually a rather competent theoretical physicist.
He talks about Turing, fractals (including the Mandelbrot set), Penrose tilings, the history of physics, and plenty of fascinating concepts in theoretical physics ranging from well-known to rather obscure. If you’re willing to gloss over his forays into cognitive science and AI, and maybe skip the last chapter entirely, it’s actually a very good read.
As far as philosophy of the mind goes, though, I’d just leave that to people like Daniel Dennett.
I read too quickly. The Nothing That Is, by Robert Kaplan, is about the history of zero.

I managed to finish a book before buying new ones!
I just finished A Briefer History of Time, by Stephen Hawking and Leonard Mlodinow. It’s a 2005 revisit of the famous A Brief History of Time. In it, Hawking briefly explains things like black holes, quantum physics, string theory, and the origin of the universe, in terms anyone could understand. And I do mean anyone.
I (mostly) finished Jeffrey Friedl’s Mastering Regular Expressions, which, as I said, is an O’Reilly book. Surprisingly, it’s about regular expressions.
I finished The Character of Physical Law by Richard Feynman the other night. It’s pretty short (about 170 pages), being just a collection of seven lectures by Feynman on (surprisingly) the character of physical law.
I finished Richard Dawkins’ Unweaving the Rainbow last night. It’s a much more philosophical book, more like The God Delusion than The Blind Watchmaker.
I finished Richard Dawkins’ Climbing Mount Improbable, and I must say, it’s a very enjoyable book.
I finally finished Daniel Dennett’s
I finished Dawkins’s
I also bought and read Kurt Vonnegut’s
I finished The God Delusion by Richard Dawkins last night. As expected, it’s a pretty important book. I didn’t actually learn anything new, but I’ve been saying most of what’s in the book for a while now, and I’m not actually the target demographic.
So, I just finished