“A typical neuron makes about ten thousand connections to neighboring neurons. Given the billions of neurons, this means there are as many connections in a single cubic centimeter of brain tissue as there are stars in the Milky Way galaxy.” David Eagleman

This short, accessible, and frequently amusing book opens with “The Half Lesson: Your Brain Is Not for Thinking.” It’s not? Already my mind boggled. Then what’s it for? Wipe your mind of whatever you were thinking (ha) and prepare for a shock.

I bet you are asking yourselves: Doorknob bombshells? Doorknob bombshells in therapy? What is that?

A doorknob bombshell, also known as a doorknob moment, is a clinical phenomenon that occurs in a wide variety of settings. That’s when a patient drops distressing personal information critical to the treatment on their way out the door, hand on the doorknob, and then breaks down.                                 

What should a caring clinician do when a patient does that? It’s a near universal dilemma for clinicians.

Ideas are everywhere, with two caveats. First, you have to notice them. Second, they’re not all good. By that I mean, worth developing.

What is a good idea?

On average I read eight to ten books a month, fiction and non-fiction, for a couple hours at the end of my day in bed. Since July, after landing the book deal with W.W. Norton, I’ve also been reading one book—The Master and His Emissary: The Divided Brain and the Making of the Western World by Ian McGilchrist, MD, a British psychiatrist and philosopher—for a couple hours most mornings at the desk after a few cups of coffee.

How many pages do I read in two hours? About ten. The material is so dense, I have to take notes to stay focused. (More on that in a few paragraphs.) I haven’t worked this hard since medical school!

This surprisingly moving narrative set in Victorian England braids together three histories. First, the making of the great Oxford English Dictionary (OED), which took seventy years to complete. Second, the life of the professor, Dr. James Murray, the OED’s third and justly most famous editor, who worked on it for the last forty years of his life. And third, the life of the madman, Dr. William Chester Minor, major contributor to the OED, an American, Yale educated physician, whose illustrious career as a Union officer and surgeon during the Civil War ended due to mental illness that rendered him “unfit for duty” and led to tragedy.

The opening “Half Lesson” is titled: Your Brain Is Not for Thinking. It’s not? No. Your brain’s most important job is predicting your body’s energy needs before they arise so you can efficiently make worthwhile movements and survive to pass your genes to the next generation.

This short, accessible, frequently amusing and deeply subversive book exploded pretty much everything I’ve understood about the brain and how it works. That’s quite a statement given I’m a psychiatrist—my medical specialty is the brain.

For example, memories are not filed like paperwork—that’s a metaphor. They are actually recreated on demand. What! Yes.