Wrong. The explosions involved in a CD need not be "roughly equally apart in time". Your mind might be making it seem like that, but to the precision electronics controlling the detonators and the speed the explosives burn... they can be quite far apart.
More so the lack of a periodicity or need for periodicity is a design constraint. Nothing prevents you from having a series of explosions with no set time difference between them. Like you clearly said CD explosions are timed to provide the C (Controlled) aspect of CD. But I seriously doubt terrorists would care much about Control. I'd wager they'd be happier if the building fell sideways on others. So periodicity in the explosions is something YOU are imposing, but is not necessary for the presence of bombs. In other words the periodicity in the explosions does not rule out bombs or explosives. It just rules out "controlled". That's all you can prove and in no way can your "series" argument rule out bombs.
Hay-seuss Kristoes!!
One of the 911 conspiracy theories states that the towers had explosive removal of the column support at each floor as the upper section and debris came down and that this is why it came down at 'near free fall' acelleration.
THAT WOULD dictate a series of detonations that come at quicker and quicker intervals. However this is not in evidence in any recording of the collapses.
Now I suppose you would have that a weakening of the structure was effected by a few well placed explosives leading up to the initial collapse. However there is no evidence in the recordings of such explosions taking place either. Thus your side of the debate then says 'well it was a thermite burn' to which we on this side explain this cannot be timed, and cannot be shown to work on vertical structural members.
In fact the only people who have attempted to show that even a small column can be significantly affected by a thermite burn is Pop-sci who demonstrated that in their test the column was essentially unaffected.
To date no one on the 9/11 conspiracy belief side of the discussion has even attempted to show that a thermitic compound can be used to sever or weaken any vertical column much less one of the dimensions of those at the WTC buildings. Yet for some very odd reason this keeps being bandied about as a viable method!
Furthermore the arguement that a weaking of the lower structure would be required for complete global collapse has never been made in any fashion other than one of
'of course it had to be, the columns were really, really big and the building held up that upper portion for 30 years so it should have arrested the fall' This arguement has been addressed by , among others Bazant and shown to be a false and misleading line of reasoning.
So we are left with explosives or a thermite induced weakening at the fire floors. But of course there already was a weakening at the fire floors caused by the impact of the high speed, hundred+ ton aircraft, and the immediate large area multi-floor office fires that resulted from the release of thousands of gallons of liquid acellerant over those floors. So why are explosives or thermitic acellerants required for the initial collapse? Truth is they are not!