If memory serves me correctly.... years ago I suggested that members at the 911 Free Forums produce (a collaboration) a summary of their findings aimed at the curious person wanting to understand the mechanisms in play of the building collapses.
The discussions at the 911FF were often very technical, and very much detail oriented... but they were (from my perspective) the "best" work done in drilling down into what were the "mysteries" of the event.
Most of the members who were active were engineers with advanced degrees. Most of the arguments / discussions were quite rigorous, but lacked the formality of a scientific paper. Major Tom established a web site which as far as I can tell is the best and most complete collection or all things WTC 9/11/01
http://www.sharpprintinginc.com/911/
Tom referred to his work as a "book" which it is not. It is more like an online reference.
Essentially, the research was done not with samples and hard evidence... but from analysis of video and stills, and reference to other professional work by firms such as R.J. Lee and of course NIST.
One section is titled: ACADEMICS ATTEMPTS TO EXPLAIN COLLAPSES REVIEWED. This includes review of the most prominent conspiracy theorists.
An interesting section is ON LIMITS OF SCIENCE AND TECHNOLOGY which includes narratives about other "investigations" such as the Shuttle.
And of course there is a comprehensive VIDEO RECORD and PHOTOGRAPHIC RECORD and the structural information about the buildings, including field tests of building materials etc.
The researchers attempted to extract "understanding" and explanation from:
observations
technical / scientific knowledge
absent real world hard physical evidence
The work of the members of the 911FF was "technical research" from a distance. As researchers were trying to understand and explain a collapse... it was mission critical to "map" every thing that moved.... every visual phenomena and try to explain what caused it. Everyone does this when they see smoke... they "know" there is fire.
I would say that the single "fact" that emerged from 911FF was identifying the process described by the acronym ROOSD. Further the phases of the collapse were described and identified. However in the case of the phase of post plane impact to collapse of the top block in the twins... and from the descent of the East Penthouse of 7wtc until the entire building appears to be collapsing... no certain conclusions are presented as to precisely what occurred. One can't see inside the facade... and the structure was so complex that possibilities defy a conclusive statement what happened during that phase.
NIST, or course, advanced the floor truss failure as THE cause for the process of this phase in the twins.... and the failure of an (unseen) girder framed into column 79 moving off its beam seat. We may never know with certainty what was going on in phase one to lead to phase two.
++++
Returning to the Every-Man book Thomas is after... this would be a hard one to write because there is truly no consensus about the processes which are unseen behind the facades of the buildings. NIST even fails to describe the mechanisms of "global collapse".
So.... wouldn't Every-Man's 911 have to go into ALL the reasonable / possible mechanisms of the "unseen" phases? I would think so.... and in the end there would be no conclusive statement of the exact chain of events which lead to the total collapse of each of these three buildings. The book could explain why we can't know... which is essentially absence of data about what was going on unseen inside the structures before "global collapse".