Nice to see this reflected in one of Glen Alleman's recent blogs: The Value of Information.
In a way, its a commonplace: all we have in any intellectual or social endeavour is 'information'. That's not a special observation. However, what is special is how rarely this translates into common understandings of project management or how the related estimates of risk, cost, delivery performance are made.
A lot of discussion seems to refract PM as a time and/or cost (usually 'time' if the way PM is coupled with scheduling computer packages) game. Well, these are clearly part of it in the real world where both are limited, or constrained, but the project grows and lives (and succeeds) on the good management of information.