User:Cs32en/911/Sources/Ryan, Gourley and Jones/2008/content

Physicist Steven Jones and theologian David Ray Griffin have published accounts of the theory. Proponents argue that the aircraft impacts and resulting fires could not have weakened the buildings sufficiently to initiate collapse and that the buildings would in any case not have collapsed as completely, and quickly as they did without an additional source of destructive energy to undermine their structure. Various sources of this energy have been proposed; a number of notable proponents suggest that thermite, explosives, or some combination thereof, has been used.