Connections was written as a companion series to a documentary series of the same name. I've heard great things about the show, and since I really enjoyed the book, I'll track it down eventually. Burke's basic arguments here is that history is a continuum, not a series of isolated events. And so the atomic bomb owes its existence, in part, to that marvel of military engineering, the stirrup. It is indeed fascinating to trace the development of things that only seem unrelated and turn out to be on a direct line of thought. And actually, I did already know many of these isolated facts, but I'd never connected them as Burke does here.