The Rules of Contagion is slightly out of my wheelhouse, being less about infectious disease and more about the principles underlying all kinds of contagion. Certainly, there are many examples taken from infectious disease, and it’s a rather on-the-nose choice to read in the current climate (for posterity: I write this review in the midst of the UK’s lockdown to prevent the spread of SARS-CoV-2)… but a good amount of it is discussing other ways of “going viral”: computer viruses, internet memes, and even failure in the financial sector.
I found it reasonably clear and easy to understand, and luckily the math content is pretty light and more theoretical than anything. I did feel sort of like it got stranded in the weeds, though: I wasn’t sure where it was going, and as a consequence, I wasn’t sure whether we got there or not.
In the end, it sort of felt like I was being told a series of cool anecdotes and snippets from research, without them being entirely related to each other. There’s no ur-theory of contagion here, just a ramble connecting some various strands of contagion theory together. That’s not uninteresting, but it feels a little unsatisfying!