This problematic practice applies to governments as well. The only solution is to employ people you trust, and appeal not only to their skills and wallets, but heart, pride and loyalty as well.
A group of brave American engineers and architects (these traditionally conservative professionals are now “conspiracy theorists”, of course) seem to be making headway in making more people re-think 911. To the silent professionals and academics who pretend not to notice the metaphysical collapses of THREE (not two!) WTC towers, why are they not trying to understand the phenomena better in research laboratories to improve the safety of American buildings? Can't get a research grant? Alternatively, they could organise a study tour to Chechnya (or any country for that matter) to learn evidently superior design and building techniques (watch how a Chechnya building stand up in a MUCH bigger fire here).
Other related posts: http://guo-du.blogspot.hk/search/label/911%20Delusions