Sounds like the Sagan offspring has gone total tinfoil hat.Perhaps he’s trying to get back at dear, deceased dad for some bizarre reason.
If you are at all curious, a link on my profile page will take you to an essay regarding WHAT happened on 911; not who, not why, not how, just really WHAT happened. The government line does not hold up to the Physics. But idiots like Steven Jones throw so much gas on the fires of argument with their idiotic nano-thermite or mini-nuke crap that a reasonable discussion is not possible, especially here at FR.