Phi

Picked this up because I liked Tononi’s actual scientific concept, integrated information theory, the idea that consciousness might be measurable as a quantity, Phi, generated by how a system’s parts are wired together. That’s a genuinely interesting hypothesis and I wanted to understand it better. What I got instead was a mostly allegorical, deliberately literary journey where Galileo tours dreamlike scenes discussing the brain with historical figures, Descartes, Turing, Proust, Emily Dickinson, and then each chapter closes with a footnote-style “notes” section where a detached narrator explains what just happened and who the references were.

I get what the structure is going for, using the poetic sections to gesture at ideas too slippery for direct exposition, then using the notes to ground them back in something concrete. For me it landed somewhere in between the two audiences it seems to be aiming for. Too fanciful and indirect to actually teach me the theory the way I wanted, too dense with allusion and third-person authorial asides to work purely as literature either. I found myself wishing more than once that the book would just pick one mode and commit.

The parts that did work, the passages using the golden ratio itself, the actual number Phi, as a kind of unifying image for consciousness as gathered, integrated information, are genuinely lovely when they land. There’s real ambition in trying to render a scientific theory as something closer to myth. I just don’t think it fully earns the length it asks for to get there, and the third-person authorial notes started to feel more precious than illuminating by the halfway point.

Three stars. Beautifully produced, admirable ambition, and I came away from it less informed about integrated information theory than when I sat down with a modest research paper on the subject a year ago.