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Written with a pro-Klan spin, the book is a terrific resource for understanding the first incarnation of the KKK from the perspective of those who were in it. Worth looking at whether you love them or hate them.
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Thank you in advance for your response.
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Vincenti cites several examples from the aeronautics industry. While these descriptions take on an anecdotal character, these collected narratives nonetheless impose his conclusion as well as any philosophical essay could and probably better. In each case, _What_Do_Engineers_Know_?_ demonstrates that incomplete information may yield intermediate results having little or no effect on the intended problem.
The first example relates to a wing design for the B-24. The history of the Davis airfoil design is explained, as well as its incorporation for the B-24 wing. At the time of its adoption, various airfoil shapes had been investigated, and the Davis form subsequently was found to resemble the high performance laminar-flow airfoil. But did this form benefit the B-24 performance. Probably not, answers the author. Laminar flow can be difficult to maintain at the Reynolds numbers typical of modern aircraft, particularly in wartime conditions when surface roughness will likely increase tripping the boundary layer to turbulent (with resulting increased drag -- laminar flow has a thinner boundary layer, but is more prone to flow separation). The B-24 was considered a fine aircraft, in part due to its wing length.
The second example describes flying-quality characteristics and relative design priorities regarding stability and control. (The Wright brothers had emphasized stability in the infancy of manned powered flight.) Designers had to determine what characteristics made an airplane desirable to pilots, and which would consign them to the scrapyard. This ergonomic study evolved as pilot and aircraft capabilities expanded in speed and flight duration. An appendix provides qualitative criteria used to compare stability performance.
The third example compares how thermodynamics is treated by physicists and engineers. The latter employ control volume analysis as developed by Ludwig Prandtl for economy and accuracy rather than the understanding of nature governing thermal energy transfer. The fourth example covers data collection for airplane propellers. Subtle changes in camber, pitch and twist in a design can have subtle or profound effects on efficiency. These were evaluated using empirical studies, in contrast to a more analytical treatment where the contributing second and third order effects are more difficult to distinguish. The fifth example explains the struggles in riveting thin metal sheets with countersunk joints for aircraft production. The establishment of standard head angles required more detailed material behavior for both rivets and attaching sheets than previously known.
Finally Vincenti concludes with a synthesis on how design knowledge develops from functional collections of information. The writing style can be tedious at times, and other times smooth, but this is a matter of personal taste for the reader. While a typical engineer may find some aspects of the work, particularly among the examples, more familiar than other chapters, it nonetheless remains a beneficial insight into how engineering knowledge is acquired, organized and utilized to address the concern at hand.
Vincenti describes how aeronautics technologies grew and went through their stages, and this has given me insight into my own. This is not a book of idealized process for implementing technology. It is s set of historical case studies, some of which Vincenti himself participated in, others of which he researched.
The book is not easy to read, but I have found it very rewarding. It is full of technical terms and heavy technology. At the same time, if you pay the price in effort and study this book carefully, you will not be disappointed. You will see how technologies develop, and knowing this, you will be able to anticipate developments and needs in your own area of growth.
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If you're going to by this book for the two audio CDs in order to "Relive the Events That Stopped Our Lives. . .," don't. The audio CDs are mostly a narrative, read a bit over dramatically by Bill Kurtis. The actual news broadcasts and historical audio has been edited down to modern-day 30-second sound bites, as if we're too dumb to listen to anything longer. It would have been far better to provide *at least* five minutes of uninterrupted audio so we could experience some of the tension and awe of the first moon landing, the assassination of a president or the launch of an invasion. I can hear Bill Kurtis just about any day of the week on TV. We are of an age where technology can help us re-present history in significant chunks. Too bad this book and audio CDs don't do so.
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I was glad to learn about the Knights of Templer and that they were crusaders. I always wondered how Sam Spade in the Maltese Falcon knew that and it is because of this classic.
I was surprised that it talked so much about Robin of Lockesley. The story of Ivanhoe seemed to be the same only told by Ivanhoe's friends and not Robin's.
I thought that the DeBracyn and the Knight of Templer Brian de Bois Guilbert were pretty evil guys which made the story interesting. They were weasels when they had their backs to the wall but did preform with honor when required like when Richard gets DeBracy.
I guess I did not understand the prejudice of the time because they treated the Jews like dirt and they were so sterotypical. I really thought that the Jewish girl Rebecca was going to end up with Ivanhoe instead of that Saxon Lady Roweana. I guess you have to appreciate the times that they lived in.
It was a different look the Richard/Prince John history.
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This is the only David Irving book I've read and in some ways I was very VERY impressed but in others disapointed.
I was impressed by Irving's first hand research. True to his reputation, Irving bases his books on first hand rare documents. But Irving's first hand anyalisis is stunning. Mainly Robert Jackson's diary.
I was let down by the book's format. The information is not layed out well and hard to follow. The facts are great but they do not read well.
I've heard some moan "It's Holocaust denial." I guess they haven't read the book since Irving never says any such thing.