An attempt to explain a lot of really advanced mathematics to an audience of people with technical training but no specialist knowledge of the area. As such, it tries to do far too much in a very limited space. Each chapter discusses an idea so broad and deep that it needs a whole book of its own. Some of the articles have no illustrations at all: a serious omission. By avoiding the details, this collection leaves the reader with only the vaguest sense of what is going on.
For example, "moonshine" connects The Monster Group with a j-function, by way of String Theory. How many people, even at the best universities, have even a basic understanding of all three concepts? I know a little of the Monster and a little of String Theory, but nothing of j-functions.