The history we are taught in school, held to be common knowledge, is almost always wrong, and nowhere is this more true than with the history of technology. Growing up in the United States, I was taught that everything was invented in America: that Howe invented the sewing machine, Fulton the steamboat, Morse the telegraph, and Edison invented the incandescent light bulb everything else. Of course, none of that is true, and my favorite books are everything-you-know-is-wrong books which correct our assumptions of how modern life came to be. "The Shock of the Old" is one of the best of these, and it is full of examples of how inventions developed in unexpected places. For example, he points out that in 1895, there were more automobiles running on the streets of Barcelona than there were in New York (or Detroit).
But is it all accurate? For the most part, detailed source notes are provided, but then Edgerton makes such statements as that prior to 1939 only Great Britain and Germany had broadcast television. I suppose that by 1939, he refers to the public demonstration of television at the New York World's Fair, but prior to that Britain's broadcast television was from the Baird Television company, which employed the *mechanical* capture and reproduction of a moving image using a spinning disk system invented in 1883 by German engineer Paul Nipkow.
This is the second book I've read (the other being The Industrial Revolutionaries: The Making of the Modern World 1776-1914) that was written by a Brit whose intent seems to be to counteract the collective egotism of Americans by minimizing (or ignoring) American innovations. Can't anyone simply state the facts without a hidden agenda? I am certainly no great patriot, but I think that it's undeniable that Edgerton means to take America down a notch here.
In addition to that, the book is poorly organized. Yes, there's a wealth of information worth knowing, but it seems to be in no particular order -- certainly not chronological. This makes for fun reading for short periods, but then the avalanche of facts begins to pall.
On the plus side, Edgerton writes in clear, flawless English, something seemingly beyond the capability of many American authors.