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Thanks. This is attributed to one Jim Hoffmann and it appears to be an extended polemic about the NIST report. I can't identify what, if any, part of this material is due to Jones, who I think you said participated in this study. Is there any link to peer reviewed work, or work submitted...

Sorry. I must have missed this post. On listening through a second time it seems that I did mishear what was said on the video. Jones was indeed referring to the WTC 7 collapse time when he said 10 seconds. So I withdraw any criticism of his presentation that I made based on that...

Why not twice? Two planes did hit the buildings within less than an hour. Twice seems no less likely than once, given that two planes did actually hit. Why do you say coincidences? All the factors are quite conceivable, given that two planes did hit the buildings. That it happened...

[/B] Multiple jet airliners: I don't think these were ever considered. Hurricanes, definitely yes. The Madrid building did actually partly collapse, but it's true there was no total collapse, there. But the Madrid building is a much more standard design ... there are many more...

So you agree that this collapse mechanism is a possibility. I agree that explosives would be a possible way of cutting the supports on one floor. I disagree that it would be very easy to do without getting caught, and I have problems understanding how one could know what floor to do the...

Steel conducts heat, it's true, but if you keep on heating it at a given point for long enough you will set up a temperature gradient in the steel, with highest temperature at the point of heating. It's a question of conduction of heat versus rate of heating. Melted steel was not...

What?! Sorry, but I have to wonder whether you have ever actually looked at the NIST report. What you say here is plainly wrong. I suggest taking a look at the report right now. Turn to page 175 (it's 229 in the pdf file) of NIST-NCSTAR1 (Draft). The pdf is available here...

[/b] What are you suggesting? That the entire weight of the building could still have been borne by the core if the perimeter tube were suddenly completely absent? The core was designed to easily support the static weight of the building as long as the core columns were true and the...

Sorry, this reply is long. I thought it necessary to quote two levels of discussion, since otherwise it would be too hard to follow what's being discussed. Also had to break it into multiple posts to avoid 10,000 character restriction. Remember that what I said here was in response to...

Quite possible, yes. But his paper on the subject has never been submitted to a peer-reviewed journal as far as I know, and the copies available on the web are not much more impressive than what's in the presentation.

No. Not at all. These buildings were unique in design. They're not easily comparable to other steel frame buildings. The weight was borne in the towers both by the core and by the perimeter tube columns: neither group was sufficient on its own to support the buildings. They were about 95%...

Just a few points on the physics aspects of Jones' presentation. As strong as believed by who? The general properties of structural steel are pretty well known by now, as one might imagine. There's no reason that I know of to believe that the steel in the towers was any weaker than...

Correct on all counts, assuming he is JC :p

My recollection is that Cramer talked a bullish line on the NASDAQ through all of 2000 and well into the beginning of 2001. He called it a bear market when $COMPX finally reached about 60% down in February. I don't remember much of what he said after that point. I rather suspect he was...

There are three possibilities for the way open interest changes with each trade in a futures market, depending on whether the long and short sides of the trade are closing out already existing positions, or opening up new positions. If both sides are opening new positions, open interest...

That sure brings back memories. Nice analysis of Cramer picks since May 2000 here. http://www.cxoadvisory.com/gurus/Cramer/ Cramer's response is illuminating. http://www.cxoadvisory.com/gurus/Cramer/comments/ I prefer flipping my own coins :p

They show open interest at the same link as above, the one with the daily settlement prices. The open interest is one day delayed, so to get the turnover ratio you'ld want to compare the change in open interest from one day to the next with the first day's volume figures. That gives you an...

I haven't ever seen a daily volume as high as 5,000,000 for just the E-mini S&P 500. That number sounds closer to average daily volume for the CME across all contracts. 1,032,000 is a bit below average for ES,though. It's growing rapidly year over year. Brief summary is given here, for...

http://www.cme.com/trading/dta/hist/daily_settle_prices.html?type=idx Click on CME E-mini S&P 500 :cool:

There is no basis in fact for the assertion that any of Hitler's direct ancestors were Jewish. It's well known who both of Hitler's parents were, but it is not known with any certainty at all who his paternal grandfather was. His father was illegitimate. In fact, Adolf Hitler was born...