Numerous criticisms have been received of "What Hit the Pentagon?". Some pointed to errors, some were unfounded. The new version, version 4, has now been placed at the Journal of 9/11 Studies. I have attempted to correct errors and have added a preface to help explain the purpose of the paper.
If this proves to provoke further criticism, a version 5 may well be produced, as I regard this issue as extremely important. The fact that explosives were used at the WTC is now widely accepted by the truth movement, as the science is now well understood. In the case of the Pentagon attack, however, there is a lack of cohesion in the movement because widely differing views are held. This damages our credibility. The paper provides a study of evidence to show what can, and more importantly, what cannot, be scientifically proved. It makes the case for avoiding asserting to the public what cannot be proved. It is important to avoid action which will impede progress toward a new investigation, with the hope of prosecution of those responsible for 9/11.