In previous articles, I discussed how working a problem backward from an artifact to find its cause can create considerable uncertainty. Nonetheless, this approach is sometimes the best and often the only way to find a cause (such as when studying dinosaurs). In contrast, working the problem forward (when possible) tends to create less uncertainty.
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In addition to over 35 years of experience as an instrument user, consultant, and expert witness, David W Spitzer has written over 10 books and 250 articles about flow measurement, level measurement, instrumentation, and process control. David (with Walt Boyes) is the author of seven Consumer Guides to various industrial flow and level technologies. David teaches his flow measurement seminars in both English and Portuguese.
Spitzer and Boyes, LLC provides engineering, technical writing, training seminars, strategic marketing consulting, distribution consulting, and expert witness services worldwide, and can be contacted at +1.845.623.1830 or www.spitzerandboyes.com.
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