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20 of 20 people found the following review helpful:
4.0 out of 5 stars
Form follows failure, March 31, 2004
This book is an extended essay about the process of invention. In it, Petroski takes the viewpoint that the form of manufactured items is the result of an evolutionary-like process. He stresses that for any specific item, the form it has is only an arbitrary choice from many possible solutions that the inventor could have come up with. And the driving force behind invention, according to Petroski is failure- -each change in form that an invention takes is the result of trying to address some failure in what was done previously.Petroski introduces the book with an item that very aptly demonstrates his thesis: the fork. He details the history of the development of the fork, starting with the table manners of the Middle Ages, when people were in the habit of using knives to both spear bits of food and convey them to their mouths. But in order to chop off bits of food from larger pieces, it was handy to have a second knife to hold the larger piece steady. Of course, the second knife was also like to put a hole in the larger piece, and wasn't well adapted to holding things, not until someone had the brilliant idea of making a stabilizing knife with two prongs instead of one. Eventually, this stabilizing knife began to be used for conveying food to the mouth instead of just holding food steady while cutting, and it was found that four prongs were much better suited for this task than two. Each step of the way through the history of the fork, Petroski points out how when the implement of the time failed to accomplish its intended task satisfactorily, its form was modified, until the fork took its present customary form. At the same time, however, Petroski also stresses that the current form of the fork is only one possible solution to the food conveyance problem. He compares its development to that of chopsticks, which are equally well suited to the same task, but take a very different form. Other objects given a detailed examination in this book include paper clips, zippers, and cans for food, as well as openers for cans. In this last topic, Petroski brings out the point that objects are often developed and brought into use long before their supporting technology is even conceived of. Although tin cans came into general use during the first half of the Nineteenth Century, it was to be another 50 years before the first can opener was finally developed. Until then, producers of canned foods expected their customers to open their cans by stabbing them with hammer and chisel and (miraculously) come back for more! Overall, I found the book somewhat interesting, and certainly illuminating. While I agree that form does follow failure in many cases, I think that Petroski is too quick to dismiss aesthetic influences in the evolution of form. He notes that some forks in modern tableware sets have only 3 tines out of a desire to look different or special, even though they aren't as efficient at conveying food as 4-tined forks. But he dismisses this as being a minor factor, unimportant for the general evolution of the fork. Perhaps he is right in the case of forks, but there are a number of other items where fashion plays a larger role. High-heeled shoes, for instance, are certainly an evolutionary wrong-turn in foot attire, but not a dead end. Colored cars are wasteful in the mass production process, as Henry Ford was quick to point out, but he learned that color options are also a selling point. Indeed, many times a better solution for achieving a task can be invented, but then never brought to market because of economics. Or the form that finally does become standard is a less than optimal solution for the task, but cheaper to manufacture than a better one. Petroski points to tableware sets with over 200 individual items, each with a separate task. He argues that each item was developed in response to some perceived failure of another form at doing the stated task, and dismisses the idea that it was simply manufacturers trying to develop new things for consumers to buy so that they would have a complete set. Personally, I'm not so sure that the manufacturers really depended entirely on failure to develop the forms of their tableware. I find it easy to imagine an artist being asked to come up with some more fancy designs that could be created in silver so that customers would have more items to purchase. Perhaps some of these new silver utensils received their titles only after they were actually created and tested to see what they might be good at. In short, I think that economics may have a stronger influence on the form of things than Petroski seems willing to grant in this book. But in any case, the book is very well researched and documented. It is amply illustrated with black-and-white photos and drawings. The text itself flows smoothly and is quite clear for general and technical readers alike although it can be a bit dry at times.
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