Wednesday, November 13, 2013

Gun suicides

Interesting result. From http://marginalrevolution.com/marginalrevolution/2013/11/firearms-and-suicides-in-us-states.html:

If suicides and gun ownership were being driven by a third factor we would expect gun ownership to be correlated with all suicides not just gun-suicide. What we find, however, is that an increase in gun ownership decrease non-gun suicide. From an economics perspective this makes perfect sense. As gun ownership increases, the cost of gun-suicide falls because guns are easier to access and as the cost of gun-suicide falls there is substitution away from non-gun suicide.

Put differently, when gun ownership decreases other methods of suicide increase. Substitution among methods is not perfect, however, so when gun ownership decreases we see a big decrease in gun-suicide and a substantial but less than fully compensating increase in non-gun suicide so a net decrease in the number of suicides.

- See more at: http://marginalrevolution.com/marginalrevolution/2013/11/firearms-and-suicides-in-us-states.html#sthash.eq0Uf9z1.dpuf

--
Deck thyself now with majesty and excellency; and array thyself with glory and beauty.
Cast abroad the rage of thy wrath: and behold every one that is proud, and abase him.
Look on every one that is proud, and bring him low; and tread down the wicked in their place.
Hide them in the dust together; and bind their faces in secret.
Then will I also confess unto thee that thine own right hand can save thee.

I could not love thee, dear, so much,
Loved I not Honor more.

Friday, November 1, 2013

On relativity

I'm not sure what to think of this datum. The result seems consistent with special relativity so I presume it's consistent with general relativity too, but then again I don't really understand the math for a rotating reference frame.

Note: On October, 1971, J. C. Hafele of Washington in St. Louis and Richard Keating of the US Naval Observatory in Washington, borrowed two cesium clocks from the Naval Observatory and bought each a first class found trip seat on commercial flights, one headed east, the other west.  The clocks were strapped into the seats and never moved again until they returned, nor were they observed in transit.  "The experiment may be the cheapest ever conducted" to test relativity, Scientific American explained. When the clocks were returned to Washington, the west bound clock had speeded up by 273 nanoseconds compared to an identical clock that remained at the Observatory, and the east bound clock had lost 59 nanoseconds. The previous position of Einstein was that "Moving clocks run slow", but there had been no prediction of a time difference depending on the direction of travel. The explanation by the relativity theorists involved a new frame of reference and a long defense as to what that reference frame was needed. Beckmann's theory predicted the time differences due to the travel of the clocks through Earth's gravitational field.

--
Deck thyself now with majesty and excellency; and array thyself with glory and beauty.
Cast abroad the rage of thy wrath: and behold every one that is proud, and abase him.
Look on every one that is proud, and bring him low; and tread down the wicked in their place.
Hide them in the dust together; and bind their faces in secret.
Then will I also confess unto thee that thine own right hand can save thee.

I could not love thee, dear, so much,
Loved I not Honor more.

Irony

This exchange with Richard Dawkins strikes me as incredibly ironic. (http://www.newstatesman.com/science/2013/10/richard-dawkins-interview-pope-francis-poetry-and-why-jews-win-so-many-nobel-prizes)

IC: One problem with these Darwinian explanations, however convincing they are, is that they aren't really falsifiable.

RD: That is a very common criticism, and it's probably a valid one. That doesn't mean they're wrong, of course. I think from my point of view—I won't say it doesn't matter whether they're right or wrong, it's just sufficient in some cases, for me, to be able to say, Well, at least it's not totally implausible from a Darwinian point of view.

--
Deck thyself now with majesty and excellency; and array thyself with glory and beauty.
Cast abroad the rage of thy wrath: and behold every one that is proud, and abase him.
Look on every one that is proud, and bring him low; and tread down the wicked in their place.
Hide them in the dust together; and bind their faces in secret.
Then will I also confess unto thee that thine own right hand can save thee.

I could not love thee, dear, so much,
Loved I not Honor more.