The WTC 7 collapse exhibited none of the characteristics of destruction by fire, i.e.
1. Slow onset with large visible deformations
2. Asymmetrical collapse which follows the path of least resistance (laws of conservation of momentum would cause a falling, to the side most damaged by the fires)
3. Evidence of fire temperatures capable of softening steel
4. High-rise buildings with much larger, hotter, and longer lasting fires have never “collapsed”.