It is clear that he makes the classic mistake that many have made - assuming that during the "Global collapse" phase for the twin towers the columns of the lower section offered significant resistance.
(My bolding emphasis) The columns would not feel that force - the towers did not collapse by that mechanism - the columns were bypassed. The floor joist to column connectors took the force - (or failed to in reality).Upon impact with the lower section the falling mass would deliver a force which would grow from zero, up to the failure load of the impacted storey columns, over a finite period of time and distance.
This force would also be felt by the columns below the storey which was first impacted...
Yeah even I understand that, the floor connections failed and the columns could not stand without them.
If G Ross responds to your emails and shows you that he holds multiple PhD's in structural engineering does it somehow make his false claims come true?
No it's more the inverse. If he lied his credibility is shot. If he really got the degrees he claimed but his area of speciality is irrelevant it makes him that much less compelling as an 'expert'.
I'm reminded of the quote, "Great minds discuss ideas; average minds discuss events; small minds discuss people." (often misattributed to Eleanor Roosevelt) It is easier to understand credentials that complex engineering
Honestly, we don't have to lift a finger most of the time: you guys are self-lampooning. 
