from http://www.agilemanagement.net/index.php/blog/Operations_Review/

key element in building a high trust culture  
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[provides] an organization level opportunity to reflect 
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also invite value chain partners from other parts of IT and from the rest of the business and some senior management
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opportunity to celebrate success
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 when we have poor performance data to show people will discuss it openly
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culture of personal safety where people can courageously speak up without fear of loss of face
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[is this a prerequisite for or effect of ops review? a little bit of both?]