Category Archives: A - BLOG - Page 20

Friday, September 19, 2014 — An Interesting Thought from Mark Thoma

It’s become a cliché that this gen­er­a­tion of macro­econ­o­mists have with­drawn from the actu­al world and embed­ded them­selves in a cocoon. You can get a Nobel Prize in Eco­nom­ics for dream­ing up an equa­tion that does­n’t have to be test­ed against real events in actu­al economies. (How the physi­cists, who must wait patient­ly for con­fir­ma­tion from real­i­ty, must envy them.) Too much empha­sis on method­ol­o­gy, is the usu­al con­clu­sion. But Mark Thoma, in the Fis­cal Times has some­thing to say about that:

There has been quite a bit of crit­i­cism direct­ed at the tools and tech­niques that macro­econ­o­mists use, e.g. crit­i­cism of dynam­ic sto­chas­tic gen­er­al equi­lib­ri­um (DSGE) mod­els, but that crit­i­cism is mis­placed. The tools and tech­niques that macro­econ­o­mists use are devel­oped to answer spe­cif­ic ques­tions. If we ask the right ques­tions, then we will find the tools and tech­niques need­ed to answer them. The prob­lem with macro­eco­nom­ics is not that it has become over­ly math­e­mat­i­cal – it is not the tools and tech­niques we use to answer ques­tions. The prob­lem is the soci­ol­o­gy with­in the eco­nom­ics pro­fes­sion that pre­vents some ques­tions from being asked. Why, for exam­ple, were the very ques­tions we need­ed to ask pri­or to the Great Reces­sion ridiculed by impor­tant voic­es with­in the pro­fes­sion? The key to a bet­ter eco­nom­ics is to ask bet­ter ques­tions, and that will require a much more open mind – par­tic­u­lar­ly from those in charge of what gets pub­lished in eco­nom­ic jour­nals – about the kinds of ques­tions econ­o­mists are allowed to ask.”

This is an inter­pre­ta­tion that would be under­stood by some­one in the nat­ur­al sci­ences (e.g. geo­physics, or epi­demi­ol­o­gy, or cli­ma­tol­ogy.) Ask­ing the right ques­tions is the key. Thoma asks why these ques­tions were active­ly dis­cour­aged. He knows the answer, but leaves us to con­nect the dots. It was the result of a pro­fes­sion being hijacked by an aggres­sive ide­ol­o­gy bent on sup­press­ing real inquiry, and sub­sti­tut­ing a kind of Lysenkoist agen­da. It was made pos­si­ble by a revamped sys­tem in which the prin­ci­ples of aca­d­e­m­ic auton­o­my and objec­tive inquiry have become mere ecto­plas­mic traces. Macro­econ­o­mists who did ask the right ques­tions did­n’t seem to get far in aca­d­e­m­ic careers, or end up in the cushy cir­cum­stances that more “co-oper­a­tive” ones did. Or rather, that’s the case in the core, but not nec­es­sar­i­ly in the periph­ery. The seri­ous ques­tion­ing tends to take place in sec­ond-tier uni­ver­si­ties, where the moose or the wal­la­bies nib­ble the shrub­bery around the quad­ran­gle. All the more pow­er to ’em, I say. Lysenko’s ghost can’t patrol them all.

There has been quite a bit of crit­i­cism direct­ed at the tools and tech­niques that macro­econ­o­mists use, e.g. crit­i­cism of dynam­ic sto­chas­tic gen­er­al equi­lib­ri­um (DSGE) mod­els, but that crit­i­cism is mis­placed. The tools and tech­niques that macro­econ­o­mists use are devel­oped to answer spe­cif­ic ques­tions. If we ask the right ques­tions, then we will find the tools and tech­niques need­ed to answer them.

The prob­lem with macro­eco­nom­ics is not that it has become over­ly math­e­mat­i­cal – it is not the tools and tech­niques we use to answer ques­tions. The prob­lem is the soci­ol­o­gy with­in the eco­nom­ics pro­fes­sion that pre­vents some ques­tions from being asked. Why, for exam­ple, were the very ques­tions we need­ed to ask pri­or to the Great Reces­sion ridiculed by impor­tant voic­es with­in the profession?

The key to a bet­ter eco­nom­ics is to ask bet­ter ques­tions, and that will require a much more open mind – par­tic­u­lar­ly from those in charge of what gets pub­lished in eco­nom­ic jour­nals – about the kinds of ques­tions econ­o­mists are allowed to ask.

- See more at: http://www.thefiscaltimes.com/Columns/2014/09/16/Can-New-Economic-Thinking-Solve-Next-Crisis#sthash.LiClsQFW.dpuf

There has been quite a bit of crit­i­cism direct­ed at the tools and tech­niques that macro­econ­o­mists use, e.g. crit­i­cism of dynam­ic sto­chas­tic gen­er­al equi­lib­ri­um (DSGE) mod­els, but that crit­i­cism is mis­placed. The tools and tech­niques that macro­econ­o­mists use are devel­oped to answer spe­cif­ic ques­tions. If we ask the right ques­tions, then we will find the tools and tech­niques need­ed to answer them.

The prob­lem with macro­eco­nom­ics is not that it has become over­ly math­e­mat­i­cal – it is not the tools and tech­niques we use to answer ques­tions. The prob­lem is the soci­ol­o­gy with­in the eco­nom­ics pro­fes­sion that pre­vents some ques­tions from being asked. Why, for exam­ple, were the very ques­tions we need­ed to ask pri­or to the Great Reces­sion ridiculed by impor­tant voic­es with­in the profession?

The key to a bet­ter eco­nom­ics is to ask bet­ter ques­tions, and that will require a much more open mind – par­tic­u­lar­ly from those in charge of what gets pub­lished in eco­nom­ic jour­nals – about the kinds of ques­tions econ­o­mists are allowed to ask.

- See more at: http://www.thefiscaltimes.com/Columns/2014/09/16/Can-New-Economic-Thinking-Solve-Next-Crisis#sthash.LiClsQFW.dpuf

Thursday, September 18, 2014 — Romancing the Volcano

I can’t help it. I’ve fall­en in love with a vol­cano. It’s so damn beau­ti­ful. Here is a video from Feel Ice­land TV. In the plane are Haukur Snor­ra­son, pho­tog­ra­ph­er & his son (un-named), and reporter Lára Ómars­dót­tir. The music is by Jónas Har­alds­son. Note on scale: the lava field shown is the size of Manhattan.

Read more »

Friday, September 12, 2014 — Bárðarbunga Walk

Yes, some peo­ple actu­al­ly do walk away from an explo­sion with­out look­ing back.…

14-09-12 BLOG Bárðarbunga walkAn Ice­landic vul­ca­nol­o­gist is obvi­ous­ly fed up with Bárðar­bun­ga’s tem­per tantrums. Those lava plumes are high­er than most city skyscrapers.

A land­scape I walked on a few years ago no longer exists. Yes­ter­day, sul­phur diox­ide lev­els peaked at 2600μg/m3 (sig­nif­i­cant­ly dan­ger­ous) at Reyðar­fjörður, a fish­ing town on the east coast. When the lava flow reach­es a small moun­tain called Vaðal­da, its path will nar­row, with unpre­dictable results. The Skí­nan­di water­fall, a land­mark, appears to be doomed. The worst dan­ger remains pos­si­ble: a jökulh­laup, or mas­sive out­burst of glacial melt, accom­pa­nied by tox­ic ash clouds

Pho­tos by Axel Sig­urðs­son / Morgun­blaðið. Read more »

Wednesday, September 10, 2014 — Ideologies

Ideology at work.

Ide­ol­o­gy at work.

This is a teenag­er who was walk­ing to school when he was near­ly incin­er­at­ed by a car-bomb plant­ed by some ide­o­log­i­cal­ly-dri­ven zom­bie. I know what the par­tic­u­lar “cause” was, the par­tic­u­lar fac­tion, but I won’t both­er to tell you because it does­n’t mat­ter. This is what ide­ol­o­gy is all about. Any ide­ol­o­gy. Read more »

Image of the month:

2014 SEP

Saturday, August 30, 2014 — Will Tiny Chattanooga Lead America Out of Conservative Darkness?

It’s appar­ent that not all of rur­al Amer­i­ca is pre­pared to let the forces of Con­ser­vatism dri­ve them into pover­ty and feu­dal serfdom. 

The City of Chat­tanooga’s local pub­lic pow­er author­i­ty had a prob­lem a few years ago. They were plagued with pow­er out­ages. The city esti­mat­ed loss­es of about $100m annu­al­ly to local busi­ness from these out­ages. Like most small cities in the U.S., Chat­tanooga’s econ­o­my was dead in the water. The solu­tion, for the pow­er author­i­ty, was to install a fiber-optic sys­tem to com­mu­ni­cate with the dig­i­tal equip­ment on the grid. This new tech­nol­o­gy would elim­i­nate most out­ages and quick­en restora­tion times when they occurred, plus ren­der main­te­nance more effi­cient and sig­nif­i­cant­ly low­er oper­at­ing costs. The plan was to build the sys­tem for $220m (the cost of an indoor shop­ping mall) financed by a local bond issue, and to fin­ish the work in ten years. Dur­ing con­struc­tion, Oba­ma’s Recov­ery Act took effect, and it turned out that they qual­i­fied for $110m of Fed­er­al mon­ey, which meant that the project could be fin­ished in three years. Now here’s the inter­est­ing part. At some point in the process (I’m not sure when), they real­ized that they were actu­al­ly build­ing a super-fast inter­net cable sys­tem, and that they could pro­vide every­one in Chat­tanooga with inter­net ser­vice run­ning at 1 gig per sec­ond —- about fifty times faster than the U.S. aver­age.  Read more »

Image of the month: desert fox cub

#C (8090)

Image of the month:

#L! (1602)

Image of the month: petroglyphs, central Sahara

Vandalised rock art is pictured at Tadrart Acacus May 30, 2014. REUTERS/Aimen ElsahliThis ancient rock art found in the Tadrart Aca­cus, a moun­tain range in exact cen­ter of the Sahara, was pho­tographed on May 30, 2014 by Aimen Elsahli, and put out by Reuters News. Reli­gious fanat­ics had been attempt­ing to destroy the art by scrub­bing them with acid. The art por­trays ani­mals such as these giraffes that flour­ished in the Sahara when it was filled with lakes and grass­lands. Below is a pic­ture shows an approach route to the Tadrart Aca­cus, show­ing its present climate:

2014 MAY B

Sunday, May 5, 2014 — In Search of Gildas

Grotto of St. GildasOne spe­cial trip, at my request, was to the chapel of Saint Gildas. Gildas is well-known to those who study Eng­lish his­to­ry in the “dark ages”, because his De Excidio et Con­ques­tu Bri­tan­ni­ae is the first writ­ten his­to­ry of Britain. In fact, it is pret­ty much the only doc­u­men­tary source for fifth and sixth cen­tu­ry Britain. Bede’s His­to­ry doesn’t appear until the year 731. But Gildas spent part of his career on the con­ti­nent (he is sup­posed to have slain a drag­on on a brief vis­it to Rome), and specif­i­cal­ly in Mor­bi­han, where he died. There are two writ­ten biogra­phies of Gildas on which we depend for infor­ma­tion, but they were writ­ten respec­tive­ly in the ninth and twelfth cen­turies, and tell very dis­sim­i­lar sto­ries. The ear­li­est life relates that Gildas con­vert­ed the hea­then of the Blavet val­ley by stand­ing upon a great rock over­look­ing the riv­er and shout­ing his exhor­ta­tions. That sort of thing, appar­ent­ly, worked in those days. When some­one has already slain a drag­on, he prob­a­bly has a suf­fi­cient­ly force­ful per­son­al­i­ty to pull it off. Any­way, the rock is still there, with a medieval chapel at its foot, and the place is won­der­ful­ly atmos­pher­ic. It being before the tourist sea­son, Didi­er and I had it all to our­selves. Gildas lived, with one acolyte, in a tiny grot­to under­neath the rock, still acces­si­ble, until he returned to his monastery on the coast and com­plet­ed Con­ques­tu Bri­tan­ni­ae. While the late medieval chapel was closed, I have found a pic­ture of its interior.

Chapel of St. Gildas