This episode featured attempting to run on water, what can shield you from a blast.
The A myth (Jamie and Adam’s) was running on water. All attempts to do this failed, not surprisingly, though the YouTube video was replicated (its faked).
The idea was if one could run on water, at least for a few steps. Even an Olympic athlete couldn’t do this, though a small lizard and many insects can. Greater weight makes its impossible.
I did wonder if approached the water more like a long jumper possible you could manage to push of the water. I doubt it, but I wonder.
It turns out that crouching behind a car or wall does offer quite a bit of protection from a blast. This is a phenomenon on fluid dynamics. The one thing I would have like to have seen tested was if being in the car is more protection than being behind it. I’m pretty sure the answer would be yes if the windows were rolled up and absorbed even more of the pressure wave.
I’ve heard it suggested that our European allies’ armies army are not in a league with that of US. I didn’t have any knowledge to dispute or accept that, but New Republic, hardly a right wing rag, seems to concur about this weakness of our social democratic friends across the Atlantic.
Open Wide http://www.tnr.com/print/article/crossings/87377/libya-nato-military-po...
Published on The New Republic (http://www.tnr.com)
How Libya revealed the huge gap between U.S. and European military might.
Lawrence F. Kaplan April 26, 2011 | 12:00 am
In 1992, the foreign minister of Luxembourg, Jacques Poos, declared that “ the hour of Europe” had arrived. The minister pronounced this falsehood in relation to the catastrophe in Bosnia, where, he assured, the reach of Luxembourg and that of its European neighbors would soon put an end to the slaughter. The hour of Europe stretched across three sickening years, culminating in the spectacle of Dutch troops cuffed to lampposts and ending only when an American column of 70-ton tanks from the First Armored Division crossed the Danube.
Fast forward to 2011. News of the hour of Europe has been supplied once more, this time in Libya. The Europeans haven’t declared it so; President Obama has. Going a step beyond President Clinton, who pledged to gruesome effect that it wouldn’t be our troops venturing into Kosovo, President Obama—after conducting a de facto plebiscite on the advisability of military action against Libya—vowed, “It is not going to be our planes
maintaining the no-fly zone.” Instead, we would surrender command and control functions to “NATO,” an otherworldly organization that, it was soon revealed, we command and control. Thus, the administration argued itself into a “surgical” campaign of only a few days and a few hundred sorties. This effort, dubbed Operation Odyssey Dawn by the Pentagon, would, at most, “diminish” Libyan capabilities. The charge of dislodging Muammar Qaddafi, or whatever the point of the exercise was meant to be on a given day, would be left to our European allies. Or, as Antony Blinken, Vice President Biden’s national security adviser, put it in The New York Times on Sunday, “We did lead—we cleared the way for the allies.”
There’s just one thing: The allies don’t have spare parts.
But this is a problem for the mechanics. The president, after all, has inaugurated “a new era of international cooperation” and has said it would be best for America “to act multilaterally rather than unilaterally.” This paradigm responds to multiple needs unrelated to national security as such. It testifies to the virtue and good intentions of its architects. It offers assurance that U.S. military power serves not only national interests but also the interests of all humanity. No one has espoused this view more vigorously than Hillary Clinton. According to the Secretary of State, “We know our security, our values, and our interests cannot be protected and advanced by force alone nor, indeed, by Americans [alone].” Alas, and however respectful of the tenets of enlightened liberalism all this may sound, it provides no adequate response to a dilemma that is the stuff of structure and concrete, not ideology: Libya has exposed the true extent of what defense experts refer to as the “capabilities gap” between Europe’s and America’s military forces.
A campaign devised to showcase the benefits of multilateral action has done exactly the reverse.
1 of 3 4/27/2011 8:02 PM
Stephen Williamson: New Monetarist Economics
via Mark, Brad, and Ben.
Over at Managerial Econ, Luke Froeb highlights a nice example of the winner’s curse. Like Google, Yahoo uses automated auctions to sell ads. One wrinkle is that some advertisers prefer to pay for impressions, some prefer to pay for clicks, and some prefer to pay only for resulting sales. Yahoo thus needs some mechanism to put these different payment approaches on a comparable footing:
To choose the highest-valued bidder, Yahoo develops predictors of how many clicks and sales result from each impression. For example, if one click occurs for every ten impressions, an advertiser would have to bid more than 10 times as high for a click as for an impression in order to win the auction.
Yahoo was very proud of its predictors, but was puzzled that they systematically over-predicted the actual number of clicks or sales after the auctions closed.
This is the winner’s curse in action. As auction guru (and Yahoo VP) Preston McAfee explains in the paper Luke cites:
In a standard auction context, the winner’s curse states that the bidder who over-estimates the value of an item is more likely to win the bidding, and thus that the winner will typically be a bidder who over-estimated the value of the item, even if every bidder estimates in an unbiased fashion. The winner’s curse arises because the auction selects in a biased manner, favoring high estimates. In the advertising setting, however, it is not the bidders who are over-estimating the value. Instead, the auction will tend to favor the bidder whose click probability is overestimated, even if the click probability was estimated in an unbiased fashion.
McAfee then goes on to explain how Yahoo overcame this self-inflicted winner’s curse, and other strategies to improve auction performance.
Yahoo’s Self-Inflicted Winner’s Curse
Fri, 15 Apr 2011 22:02:06 GMT