I have been guilty of circular reasoning but I can't get away from it.
If an engineer disputes what we know to be true then they aren't very good or are being dishonest. I actually believe that to be true.
How someone who claims to be an engineer or scientist and disputes the missions to the moon or the collapse of the WTC, or any number of other conspiracy subjects is beyond me.
Unfortunately because they claim to be professionals, i.e John Lear, Architects and Engineers for 9/11, Dr Judy Woods etc, it gives the conspiracy theorists, what they perceive to be, a professional endorsement.
My opinion of Richard Gage as an architect is pretty low but my only knowledge of architecture is from my daughter who is doing her masters in architecture this year.
From what I have gleaned, architecture is more an artistic discipline than scientific one. She was only exposed to the most rudimentary structural science. The majority of it being building codes and legal requirements as far as I could tell. The idea, I guess as a layman in that field, is they design the buildings and it's up to the structural engineers to turn that design into a safe reality. So from that point of view how much would Richard Gage know about the physics of the WTC collapse anyway?
I like to think of engineers as practical scientists. I'm not suggesting scientists are not practical, although I'm sure we have all known one or two. Our love of science is manifested in the practical application of our craft. One of my greatest joys is when something doesn't add up and I get to find out why, I don't cry conspiracy every time it happens because we all know that sometimes things to go the way we expect. These days I give that task to my staff especially the trainees but I do like to get away from the computer and stick my nose in sometimes.