Alan Cooper, in his book "The inmates are running the asylum", suggests that although focus groups might be effective in many industries, they should not be relied upon in the software industry.
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In February 2013, Prenda Law Inc., Paul Duffy, Paul Hansmeier and John Steele sued Alan Cooper, his attorney, and numerous "John Doe" defendants in an Illinois state court, alleging defamation.
On May 6, 2013, Judge Wright sanctioned Prenda Law and its "principals" Gibbs, Steele, Hansmeier, and Duffy, whom he termed "attorneys with shattered law practices", $81,319.72 for "vexatious litigation", "stealing the identity of Alan Cooper", and "representations about their operations, relationships, and financial interests that varied from feigned ignorance to misstatements to outright lies".