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The answer to almost any question is available within seconds, courtesy of the invention that has altered how we discover knowledge - the search engine. Materializing answers from the air turns out to be the easy part - the part a machine can do. The real difficulty kicks in when you click down into your search results. At that point, it's up to you to sort the accurate bits from the misinfo, disinfo, spam, scams, urban legends, and hoaxes. "Crap detection," as Hemingway called it half a century ago, is more important than ever before, now that the automation of crapcasting has generated its own word: "spamming."

In the third part of his critical thinking series, Howard covers how teachers can turn students into "online detectives" by teaching critical research skills to determine site ownership and bias. Also, he describes some of his own collaborative teaching techniques.

Almost the first thing that gets built when anything needs management is a good measurement system. It allows tuning, enables detection of deviations from norm, and gives feedback on the effect of changes and initiatives. Communities of practice are complex creatures, and thus their measurement is not simple. The number of perspectives that can be used is enormous. At the same time, the availability of data for each of them is very different, and the temptation to use subjective management impressions is high. So the history of CoP management is full of references to indicator-building, to attempts at significant reporting, and to a wide variety of more or less objective measurements. But we have not found a coherent, complete set of measurements that could be used to consistently evaluate not just one CoP, but a set of them, and eventually even to benchmark different ones, along most of the lines that can be affected by management. So we've attempted to put forth a simple, practical list and brief explanation of straightforward indicators that can be implemented in most CoPs, and especially in those with an online component. The first result of it is the linked white paper, but it should not be the last one.