This book is really a short-ish essay, broken up into very short segments, written very early in the course of the pandemic. It explains — very briefly — some of the numbers and concepts that render COVID-19 a global concern, and tries to contextualise some of the public health measures being taken.
For me, it’s very basic, of course: I know what the R-nought is, I know why it’s important, and I know what it isn’t. This is much more for a layperson, something on the level I might write on my science blog, with a touch of personal reflection as well. It’s mildly interesting to me, but I suspect it’s of much more value to people who are newer to these concepts. Given that, I can’t say it was more than a curiosity for me, or something that sticks in my head — but it may be better for others in encapsulating and explaining some of the ideas we need to get a handle on right now.