LEED building performance

I have my Google reader set to search various blogs, news sites, and Twitter feeds to help me keep current with the latest trends in the construction industry.  There remains one major problem: the words we use have different meanings for everyone.  

Google and BIM

Take, for example, my search of Twitter feeds (above) for Building Information Modeling (BIM).  If you were to do

When discussing the short and long term building performance of a green project, the issue generally comes down to the following question: Is there any identifiable or measurable gap between the predicted building performance (in the design and construction phases) and the actual bulding performance (during occupancy, operation and maintenance)?  This issue has been addressed in