Showing posts with label WTC1. Show all posts
Showing posts with label WTC1. Show all posts

Sunday, August 28, 2011

The "First Claim" Test

ae911truth has slapped together a pdf of old claims against the exhaustive NIST report. Readers of this blog are familiar with our approach to the glut of old information posing as new information 9/11 deniers pour out: The first claim is a smell test. It's their first stab at trying to convince you of something, so it's got to be good. If it isn't, the rest of the piece isn't going to be any better.

Here's the first claim from "How NIST Avoided a Real Analysis of the Physical Evidence of WTC:"

The 236 pieces of structural WTC steel that the National Institute of Standards and Technology (NIST) “catalogued” 2 for its WTC investigation included 55 columns that NIST discuss in paragraph 4.1 “CORE COLUMNS” in NIST NCSTAR 1-3C.4 NIST analyzed only four of these 55 columns for damage and failure modes. The remaining 51 columns were excluded from being examined for damage and failure modes based on the argument that only columns with a known as-built location in or near the impact and fire areas were of interest for the WTC investigation.

Wouldn't you know it, this claim's completely false. First, from page 118 of the NIST report:

NIST performed confirmatory tests on samples of the 236 pieces of recovered steel to determine if the steel met the structural specifications. Making a definitive assessment was complicated by overlapping specifications from multiple suppliers, differences between the NIST test procedures and the test procedures that originally qualified the steel, the natural variability of steel properties, and damage to the steel from the collapse of the WTC towers. Nonetheless, the NIST investigators were able to determine the following:

There were 14 grades (strengths) of steel that were specified. However, a total of 32 steels in the impact and fire floors were sufficiently different (grade, supplier, and gage) to require distinct models of mechanical properties.

The steels in the perimeter columns met their intended specifications for chemistry, mechanical properties, yield strengths, and tensile properties. The steels in the core columns generally met their intended specifications for both chemical and mechanical properties.

[…]

The mechanical properties of steel are reduced at elevated temperatures. Based on measurements and examination of published data, NIST determined that a single representation of the elevated temperature effects on steel mechanical properties could be used for all WTC steels. Separate values were used for the yield and tensile strength reduction factors for bolt steels.

So one, tests were performed on their entire sample. Possibly not for impact effects, but that would have been wildly inappropriate as not all of those columns were from a sample of the area directly impacted.

The only excuse I can think of is that ae911truth did not quote from the latest version of the final report; indeed, their cited text doesn't appear anywhere in the NIST final report. So, they're either lazy and incompetent, or outright dishonest.

What'll it be, ae911?

Monday, May 23, 2011

AE911T Tries To Debunk Judy Woods

If anyone wants insight into cognitive dissonance, you're in for a treat. AE911 has tried to debunk Judy Woods' energy weapons conspiracy theory.
They have precisely one basis of criticism and that is that their insane conspiracy theory generates marginally fewer decibels of laughter from the rest of us than Woods.' Their version - where a fictional, Roland Emmerich movie-version of the low-explosive material thermite was invisibly installed on what would've had to be thousands of building columns by the metric ton, and then ignited out of order by nonexistent people, oh and also the whole "radical Islamist" thing is a hologram - apparently pales in comparison to Judy Woods' theory that lasers from space destroyed the World Trade Center. You know, one's crazy. The other. Um.

Check out how close AE911 gets to admitting that its own theory is utter absurdity. When comparing the ability of Judy Woods' theory and their own to explaining the "collapse profile" of the Towers, this nugget drops:


In order for the core column breaks to be so straight and horizontal, DEW technology would have to have the following features:

• Be capable of a sufficiently sharp focus for it to attack all or most of the columns at a given level at the same time, but only the ends of those columns;

• Be capable of having its target level move down the building without changing the angle at which it cuts the columns;

• Be capable of having its target level move down at two-thirds of freefall acceleration (as measured by David Chandler), and perhaps other acceleration rates;

• Be capable of having multiple target levels, so that it could destroy the falling upper section of each tower while also destroying the lower section, to create the illusion that the upper section is crushing the lower section, even though that upper section is in itself being destroyed; and

• Be capable of destroying only those connections between steel columns that still form part of the buildings’ structures, leaving untouched the hundreds or thousands of steel assemblies and steel pieces that can be seen flying out of each tower in huge clouds.

In addition to all these features, Wood's alleged secret DEW technology would have to be able to pulverize most of the concrete in both Towers and Building 7, and in the case of the Twin Towers, fling 90% of the buildings' mass outside their footprints. such technology would also have to be able to account for the evidence relating to molten iron, nano-engineered energetic material, and the sights and sounds of explosions described below. Why posit sophisticated secret technology to explain these observations, when some combination of thermitic incendiaries and explosives placed throughout the buildings can explain them much more simply, without making wild assumptions?


I couldn't not laugh at that last sentence. Yes, wild assumptions. Which procurement officer was in charge of shipping in that thermite for Bush, by the way?

This is insanity at its finest. It is either deeply cynical condescension to AE911's reader(s), or mere stupidity. I can't tell. I just can't tell.

Thursday, February 10, 2011

"9/11 Deniers"

The other day I received an e-mail asking me about skeptics’ use of the term “9/11 Denier,” which is synonymous with Truther, 9/11 CT, etc.:

My interpretation is that this is a blatant attempt to equate alternative 9/11 theories with Holocaust Denial. As I'm sure you are aware, Holocaust Denial is the belief that the Holocaust simply did not take place, that the event did not occur. You are also entirely aware that proponents of alternative 9/11 information are not stating that the event did not occur, they are instead questioning who was responsible, and bringing specific aspects of the event under scrutiny. In this context, then, might the term "9/11 Deniers" seem like something of a misnomer?

To be clear, I did not start using this term to equivocate between 9/11 Deniers and Holocaust Deniers.

I started using this term because virtually every 9/11 denier falls outside the criteria our e-mailer suggests. I have never had a conversation with a 9/11 denier who was devoid of his or her own theories about “who did it,” “why they did it,” and “how they did it.” In my experience the usual culprits are Israel, some variation on an Illuminati-esque elite cabal (itself often synonymous with Israel), and/or key figures in the Bush Administration – sometimes armed with an elite posse of anonymous government agents. But in no case have I met someone who denies that 9/11 happened the way the evidence indicates it did without at least an “inkling” of who they really wanted to blame. So no, virtually no 9/11 deniers are just “questioning who was responsible” – an activity our co-skeptics over at Screw Loose Change refer to as “JAQing off.” Whether a denier chooses to present their beliefs as merely taking shots at established theory is fine; read them on their own Facebook groups or listen to them at the bar after a debate and you get a very different picture.

Of course, if 9/11 deniers were actually interested in “Truth” this is how they would it to be, anyway. Approaching a true understanding of reality through un-biased scientific inquiry involves the proposal of competing hypotheses and testing their ability to explain the evidence. As a statsy guy I tend to add the caveat that these hypotheses should always be compared to a null hypothesis, even if that hypothesis is something as mundane and obvious as “there’s nothing going on,” but in the absence of reliable priors that needn’t necessarily be the case. Deniers reject the concept, anyway. However, if they were really interested in something more than selling Alex Jones DVDs, they would not shy away from the obvious need to advance positive theories.

And finally it is important to note that 9/11 deniers are denying key aspects of what happened on September 11th. After all, hundreds of people, dozens of books, and countless articles document the motivations, actions, plans and intentions of the people who actually carried out the attacks. 9/11 Deniers are required to believe in the impossibility of organic terrorism. They’re required to believe that religious and ethnic extremists who happen to be Arab or Muslim are either incapable or unwilling to act on their beliefs (and have been so for hundreds of years). The millions of people around the world who have interacted with, been affected by, or have been in al Qaeda either don’t exist or are in on it. Abrudahman Khadr, the boy from an impoverished family that grew up alongside bin Laden’s Afghanistan operations? Obviously a fiction. Mustafa Abu al-Yazid, whose name is on thousands of accounting documents for al Qaeda? Clearly a Zionist tool. Maha El-Samnah and Zaynab Khadr, whose son died as a suicide bomber – leaving them proud of his martyrdom, but ashamed of his affiliation with al Qaeda? Probably paid actors.

Organizations like al Qaeda leave their indelible mark wherever they go. 9/11 deniers are required to pretend that those marks are just Western operatives covering their own tracks – an obvious delusion to everyone who has seen it in action, knows its members, and knows those who are tempted by it and any other extremist organization. To me, this is the key – 9/11 deniers flatly deny virtually every relevant event in the lead-up to 9/11. They deny that centuries of geopolitical events ever occurred. To them, history begins at the Balfour Declaration, crescendos when Ronald Reagan begins supplying anti-Communist rebels in Afghanistan, and ends when George Bush plants bombs in the North Tower and scampers off in a black helicopter. Between these pockmarks on the historical landscape there are thousands of religious ideologues, millions of oppressed victims of colonialism, and countless strategic opportunists struggling to guide human affairs to their own ends. 9/11 denier history is the shallowest history of all, one that requires them to reject the needs, desires, machinations and schemes of billions of people across centuries. 9/11 denial is reality denial.

That’s why I call them 9/11 Deniers.

Wednesday, February 2, 2011

No, It’s Not

“A Picture Is Worth a Thousand Words” is the new post over at AE911T that appears to argue that the debris that fell from the Towers on 9/11 “accelerated” as it penetrated the surrounding buildings, and that engages in some classic confirmation bias (and/or lyin’ with photographs!). Its nothing new, and the only reason it feels worth commenting on is because its stated aim is to “open the minds of skeptics.” Hey, we’re all skeptics here, so let’s see what we’re in for!


Another way to open the minds of skeptics – without getting technical at all – is to compare the other WTC buildings that did not actually collapse to the three that collapsed completely. Show the following photos to your stubborn interlocutor. Ask him or her to notice how severely damaged these other buildings were by the debris from the Twin Towers, yet substantial portions remained upright. And ask “Why?”


[img]http://www2.ae911truth.org/images/infoitems/WTC3.png[/img]

Ergo, “why did one of the peripheral buildings suffer a full collapse, while others only mostly collapsed (and had to be torn down later due to irreparability)?” Stunning, guys. Let’s break it down further: “I know 9/11 was an inside job because some buildings were damaged more than others.” My skeptical faculties, they cannot cope with the genius.

Here’s the thing. When there a lot of something happens in a measurable (“localized”) area, that something tends not to happen evenly. People who read this blog already know what stats geeks we are but, hey, 9/11 deniers, there’s this thing called a distribution. (For the rest of us, there are also these things that influence the spread of falling debris like initial impact point, wind speed, wind direction…)

This particularly vapid argument does not require getting down into brass tacks; it is enough to point out its statistical naivety and its obvious disingenuousness (I mean, do we really think Michael Cook doesn’t know this?) and to remind people about the macro-level apparent disorder that characterizes our universe. People who are better-qualified to address the engineering and technical specifics of why, say, WTC 7 outright collapsed and WTC 3 only mostly collapsed are welcome to, but to me this is a non-argument.

And besides, what did 9/11 deniers expect? For every tower in the complex to collapse? Why is one peripheral collapse more or less “suspicious” than two? Would five collapses have been more plausible? Why? What is the argument here?

Briefly consider with these questions in mind the next act of their shtick.


Consider the impact that WTC 3 must have sustained for it to have been damaged as it was. Material from the Twin Towers was coming down with enough force to penetrate as many as about sixteen floors of this building. Yet, the lower floors stopped the debris, and a total collapse, well before ground level, and most sections stopped the damage far higher than that. How could any “collapse” in Building 7 – which would have had nowhere near the momentum that the falling Twin Towers material did – have continued through the entire structure of WTC 7? How could any such destruction (regardless of what started it) possibly have kept accelerating, through scores of heavy, mostly undamaged columns and hundreds of structural interconnections? Shouldn’t Building 7’s collapse have decelerated and stopped even sooner than the free-falling heavy structural steel members that were stopped by the lower portions of WTC 3?


This one took me a couple of re-readings to digest fully. Mostly because Cook apparently seems to barely know what the word “accelerating” means (or is at least using it dishonestly in the hopes that you don’t know that acceleration can be both negative and positive), but also because of the transparent falsity of his argument. Why do we expect the steel kicked out of the main towers to have “more momentum” than the falling WTC 7? p=mv, anyone? Sure the building didn’t have as far to fall, but WTC 7 itself was order of magnitude heavier than the debris that crippled it structurally – all we need to know why it eventually collapsed.

Cook pointlessly references “acceleration” to make a misleading point about the falling steel “falling at a rate that was changing” – enough to warrant the word in the Cook book – and then blatantly messes up his physics concerning the “momentum” of various falling objects. I don’t foresee this claim getting too far into the “Movement” and there should be no mystery as to why.