[ExI] david statue coincidence

[William Flynn Wallace]

as few as three or four fellers with ropes and AKs could show up, use the
latter to slay everyone in the joint,  spike

Been to the Uffizi lately?  When I went there was a startling number of
guards in and out with Uzis.

bill w

On Sun, Aug 21, 2016 at 4:11 PM, spike <spike66 at att.net> wrote:

> On Sun, Aug 21, 2016 at 12:45 PM, spike <spike66 at att.net> wrote:
>
> >… buddies coming by, Hey Mike!  Whaddya doing dude?  He would say
> something like: chipping away everything that isn’t David.  …  Every chip
> contained smaller replicas of the big guy, ja?  So how does he figure they
> weren’t also rock encrusted Davids?  And each chip of each smaller David
> would itself contain still smaller Davids and way more of them, all the way
> down to the calcium carbonate…spike
>
>
>
>
>
>
>
> The more I think about this, the more it bothers me.  Sure this went off
> on a rather lighthearted… eh… make that absurd note.  But what if… David
> did topple one day and spoil the day of perhaps dozens of admiring proles?
>
>
>
> Since this is an engineering-oriented discussion, let us go that route and
> do some BOTECs, shall we?
>
>
>
> I have heard that David is about a triple scale if you assume the model
> was a big guy, and a big guy is about 100 kg and the volume of a solid
> scales as the cube of the linear dimension and so 3, 9, 27 times the volume
> of the 100kg guy and marble has a density of about 2.7 compared to humans’
> paltry 1 g/cc, so David would have a mass of about 7000 kg?  Are you
> getting about that number?  7 tons of David?
>
>
>
> OK then, we can do the same trick to estimate the cross sectional area of
> the ankles, so a big guy might be about 10 cm by about 8 in roughly an
> ellipse (no not that part, I meant the ankle), so about 60 cm^2, triple and
> squared, we get around 500 cm^2 area per ankle times two ankles so about
> 1000 cm^2 supporting about 7 tons of David or about 70 kN on about a tenth
> of a square meter, so about 700 kPa, ja?  Ha! Really a mere 700 kPa?  To
> stone that kind of pressure is child’s play!  Rather for stone that would
> be pebble’s play!
>
>
>
> Or would it?
>
>
>
> If you sat thru engineering school and didn’t learn about stress
> concentration in ceramic materials, you weren’t listening, in a really
> dangerous way.  Two things I thought of: marble isn’t really very good as a
> structural material.  It is great for sculptures because of its beauty and…
> it is easy to carve.  Whyzat?  Because it is relatively soft.  Being stone,
> stress concentration is a big deal.  With a five meter lever arm between
> ankles and neck, and an area moment of intertia small enough to obviate my
> even bothering to post BOTECs, you can see it would be easy to create
> sufficient stress concentrations to result in catastrophic structural
> failure at his ankles.
>
>
>
> Once we have those numbers we can estimate how easy it would be for three
> or four fidels to throw a rope over his neck and intentionally topple the
> artwork.  Perhaps they would see internet images of infidels walking
> around, admiring it, women with heads uncovered, committing idolatry!  This
> is offensive of course, people walking in circles around a stone, and it
> must be stopped.
>
>
>
> Keith’s evolutionary psychology-based theory on human behavior predicts
> that fidels might be motivated to destroy an idol if it gave them status in
> the eyes of their compatriots.  The compatriot to adversary ratio increases
> steadily and will likely do so for the foreseeable future in Helsinki
> Italy.  Conclusion: as few as three or four fellers with ropes and AKs
> could show up, use the latter to slay everyone in the joint, use the former
> to topple the accursed idol and flee.  The risk of this grim scenario
> increases annually, with no credible end point other than David on the
> pavement, marble microshards by the millions, each containing countless
> nano-Davids which will remain forever encrusted in calcium carbonate.
>
>
>
> If the good guys can imagine this scenario, the bad guys can think of them
> far more easily.  If such a thing occurs, I will be dismayed but not
> surprised.
>
>
>
> The article goes on about the risk of David taking a dive by natural
> factors but doesn’t say a word about what looks like a far bigger risk of
> his perishing by unnatural causes.
>
>
>
> My apologies for harshing your Sunday buzz.
>
>
>
> spike
>
> _______________________________________________
> extropy-chat mailing list
> extropy-chat at lists.extropy.org
> http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.extropy.org/pipermail/extropy-chat/attachments/20160821/657f7f38/attachment.html>