Like how 7 of the 19 alleged hijackers are still alive.
...And?
Like how the BBC reported that Building 7 fell, while Building 7 was still standing in the background, during the report.
Miscommunications happen all the time, especially with breaking news in today's journalism environment, where news companies want big, enticing headlines and they want to be the first to break it. What exactly is the alternative to it being a mere mistake? That BBC was in on the whole plot too?
They never explained the molten metal still hot days after the buildings collapsed.
There is no documented evidence of this. As a poster on a forum for atheists, I assume you understand the dangers of relying on anecdotal evidence. Even if molten metal had been found, aluminum (which is what the planes were made out of) burns well under the temperature of jet fuel.
They just say eyewitnesses were just mistaken when they said they heard explosions just before the buildings fell.
There were definitely explosions as the towers fell, since the floors pancaking would have blasted air and debris out the windows. This does not suggest bombs were planted, or whatever else is being implied here.
It's good to be skeptical about things. But only if you're reasonably skeptical. You shouldn't respect creationism because it is "skeptical" of evolution, and you shouldn't respect global warming skeptics.
The reason truther claims fail is because they're all supposition, or just plain wrong. Like creationism, it's based on poking holes in the official story and then claiming that because so-and-so can't answer your questions, the official story must be false and whatever pet theory the truther has (Bush did it, Mossad did it, Lizard Men did it, etc.) must be true, ignoring the lack of evidence in support of these theories (and supposition about what Bush/Mossad/Lizard Men/etc. would have wanted or could have done is not evidence). There are many reasons to be skeptical of the government. And there are many things we don't know about 9/11. And we shouldn't stop asking (reasonable) questions about what really happened. But most of these truther talking points are bullshit. Just pure, stinking bullshit.