Part 4/9:
The dialogue shifted to a more established hypothesis: the use of thermite in the collapse of the towers. Thermite, an incendiary that produces significant heat and light when ignited, was discussed as a possible destructive mechanism. Critics noted that its application in a scenario where steel skyscrapers were concerned would require vast quantities and generate an extreme luminosity that would be difficult to conceal. One participating physicist pointed out that such visibility would require extensive amounts of thermite distributed strategically throughout the buildings—something that he argued lacked credible evidence.