What do all of these controlled demolitions have in common?
Here's a video featuring Richard Gage giving more inconsistencies about the collapses of the World Trade Center buildings being "controlled demolitions", in this case in the type of explosives used and the effects of those explosives.
Note that his theory of how collapses of the twin towers should have been arrested is demonstrated by his model of cardboard boxes in the photograph. The carboard box that falls on another cardboard box has its fall arrested and the one that doesn't have its fall arrested falls at free-fall speed. It's that simple!
Video: The Skeptical Idealist