>
>From: MX%"Marc.Bekoff(a)Colorado.EDU" 14-FEB-2002
02:09:20.50
>To: MIKLOSA
>CC:
>Subj: RE: PLAN TO REAR BABY CHIMPANZEES AS HUMANS DRAWS
FIRE (fwd)
>
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>Date: Wed, 13 Feb 2002 18:06:10 -0700 (MST)
>From: BEKOFF MARC <Marc.Bekoff(a)Colorado.EDU>
>To: Undisclosed recipients: ;
>Subject: RE: PLAN TO REAR BABY CHIMPANZEES AS HUMANS DRAWS
FIRE (fwd)
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> >
> > > IDA News Release
> > > FOR IMMEDIATE RELEASE
> > > February 13, 2002
> > > Contact: Elliot M. Katz, DVM, 415/388-9641 x 25
> > > www.idausa.org
> > >
> > > PLAN TO REAR BABY CHIMPANZEES AS HUMANS DRAWS FIRE:
Despite Criticism,
> > > University of Louisiana Set to Approve Controversial
Experiments
> > >
> > > MILL VALLEY, Calif. The University of Louisiana-
Lafayettešs (ULL)
>New
> > > Iberia Research Center (NIRC) is set to approve a
controversial łcross
> > > fostering˛ study that seeks to raise infant
chimpanzees with humans,
>In
> > > Defense of Animals (IDA) announced today. Two years
ago, the
>University
> > > declined to proceed with the study amid widespread
criticism from
> > > primatologists and chimpanzee experts, including the
eminent Dr. Jane
> > > Goodall.
> > >
> > > The proposed project, conducted by ULL researcher
Daniel Povinelli and
> > > funded with a $1 million grant from the James S.
McDonnell Foundation
>of
> > > St. Louis, involves recruiting eight human foster
parents to live in
> > > specially constructed facilities at NIRC and raise
infant chimpanzees
> > > for five years.
> > >
> > > łDaniel Povinelli wants to separate vulnerable baby
chimpanzees from
> > > their natural mothers, allow them to bond with foster
parents for five
> > > years, then irrevocably break that bond by ripping
the trusting
> > > youngsters away from the only parents they have known
and sending them
> > > back to a cage in a laboratory,˛ said Elliot Katz,
DVM, IDA president.
> > > łAll this to answer the burning question of whether
chimpanzees raised
> > > by humans in an artificial human laboratory
environment differ
> > > developmentally and cognitively from chimpanzees
raised by other
> > > chimpanzees in an artificial animal laboratory
environment.˛
> > >
> > > łPovinellišs real agenda is clear,˛ Katz continued.
łAt the cost of
> > > immense suffering and eight irreparably broken lives,
he is attempting
> > > to give credence to his absurd theory that
chimpanzees do not think,
>or
> > > have self-awareness, like humans.˛
> > >
> > > Katz noted that overwhelming scientific evidence
contradicts
>Povinelli,
> > > who is so far out of the mainstream that his work is
routinely cited
>by
> > > fundamentalist creationists in their battles against
the theory of
> > > evolution. Katz also observed that Povinellišs
attempts to prove a
> > > łcognitive chasm˛ between humans and chimpanzees just
happen to take
> > > place at a facility that uses hundreds of chimpanzees
in invasive
> > > biomedical research.
> > >
> > > Primate experts have criticized both the science
behind the study and
> > > the ethical cost of pursuing the experiments.
> > >
> > > łThe Povinelli project is clearly not original and
appears to be
> > > redundant,˛ said renowned sign language researcher
and chimpanzee
>expert
> > > Roger Fouts, Ph.D., Professor of Psychology at
Central Washington
> > > University in Ellensburg, WA. In a statement against
the proposed
> > > experiments, Fouts noted that cross-fostering
research has been done
> > > many times.
> > >
> > > łAll this evidence points to the very high
probability that the end of
> > > Povinellišs experiment will have a devastating effect
on the
> > > psychological well-being of the chimpanzees involved
when they are
> > > abandoned by their human foster parents,˛ Fouts
continued. łThis does
> > > not mention the potential devastation that the
natural mothers will
> > > suffer when their babies
> > > are taken from them.˛
> > >
> > > In his statement, Fouts recalled the litany of
tragedies associated
>with
> > > previous cross-fostering research, including the
deaths of several
> > > chimpanzees after being abandoned by their human
łparents.˛ Foutsš
> > > statement can be viewed at
http://www.vivisectioninfo.org/fouts.html.
> > >
> > > Dr. Goodall shared Dr. Foutsš view when she wrote of
the original
> > > Povinelli proposal: łCross-fostering is very
unethical in my view.
>Even
> > > when captive infant chimps are rejected by their
mothers they should
>be
> > > introduced into groups of their own species as soon
as possible.
>Failure
> > > to do this results in long term, sometimes permanent,
behavioural
> > > disorders. . . . Detailed observations have been made
in the past by
> > > psychologists on a number of home raised chimpanzees.
In my view there
> > > can be little justification for further separation of
infant
>chimpanzees
> > > from their social groups for the purpose of
humanizing them for
> > > research.˛ Dr. Goodallšs statement is available at
> > > http://www.ethologicalethics.org/cross_fostering.htm.
> > >
> > > Katz said that sources have informed his organization
that Povinelli
>has
> > > recently re-submitted his proposal for review by
NIRCšs Institutional
> > > Animal Care and Use Committee (IACUC). Katz
suggested that pressure
> > > from a university administration anxious to bring a
$1 million grant
> > > into its coffers could account for the pending
approval of the
> > > controversial study despite rejection two years ago.
> > >
> > > According to Katz, the reasons the IACUC should again
reject the study
> > > are many and include the:
> > >
> > > *devastating impact of separating chimpanzee mothers
from their
>infants;
> > > *immense cruelty and devastation that will result
when the infant
> > > chimpanzees raised by humans with toys, bedrooms and
other amenities
>are
> > > abandoned and returned to the lab;
> > > *lack of justification for breeding eight chimpanzees
at a time when a
> > > łsurplus˛ of chimpanzees in laboratories numbers 700
or more;
> > > *lack of scientific validity in a study that proposes
to compare two
> > > groups
> > > of chimpanzees both raised in highly unnatural and
artificial
>settings;
> > > *redundancy of the cross-fostering research; and
> > > *overwhelming scientific evidence contradicting
Povinellišs theory
>that
> > > chimpanzees lack self-awareness and the capacity for
true thought.
> > >
> > > łTo the McDonnell Foundation, New Iberia and
Povinelli, these baby
> > > chimpanzees are not unique and vulnerable individuals
who need vast
> > > emotional, psychological and social nourishment just
like human
>babies,
> > > but are simply research objects to be used and
ultimately discarded on
> > > the altar of unadulterated human arrogance,˛ said
Katz. łThis project
> > > wonšt help human children, as claimed by Povinelli.
The only humans
>it
> > > will help are those, like Povinelli and New Iberia,
who will profit
>from
> > > this willful devastation of these innocent baby
chimpanzees.˛
> > >
> > > - end -
> > >
> > > WHAT YOU CAN DO:
> > > Oppose this needless suffering, and the waste of
money that could be
> > > used to help countless human children, by strongly
protesting to the
>New
> > > Iberia IACUC, the president of the University of
Louisiana, Daniel
> > > Povinelli, and the James S. McDonnell Foundation.
They can be reached
> > > at the following:
> > >
> > > University of Louisiana, 337-482-1000 (switchboard)
> > >
> > > Ray Authement, president; <president(a)louisiana.edu>;
482-6203
> > > Duane Blumberg, vice-president for research;
><dblumberg(a)louisiana.edu>;
> > > 482-5811;
> > > Dana Hasselschwert, veterinarian/IACUC member;
<dlh8344(a)louisiana.edu>
> > > Cary Heath, Prof. Economics/IACUC member;
<cary(a)louisiana.edu>
> > > Cheryl Lynch, Prof. of Psychology/IACUC member;
><csm5689(a)louisiana.edu>;
> > > 482-6596
> > > Daniel Povinelli; <djp3463(a)louisiana.edu>; 482-5180
> > >
> > > James S. McDonnell Foundation, 314-721-1532
> > > John Bruer, president; <mailto:bruer@jsmf.org>
> > > Susan Fitzpatrick, vice-president;
<mailto:susan@jsmf.org>
> > >
> > > In Defense of Animals, located in Mill Valley, CA, is
a national
>animal
> > > protection organization dedicated to ending the abuse
and exploitation
> > > of
> > > animals by protecting their rights, welfare and
habitats.
> > > IN DEFENSE OF ANIMALS
> > > 131 CAMINO ALTO
> > > MILL VALLEY, CA 94941
> > > 415-388-9641 phone
> > > 415.388-0388 fax
> > > www.idausa.org
> > >
> >
>
dr Adam Miklosi
Dept of Ethology
Univ. of Eotvos
Budapest
Pazmany P. s. 1/c
H-1117 Hungary
____________________________________________________________
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Date: Thu, 14 Feb 2002 09:30:12 -0500
From: Peter Suber <peters(a)earlham.edu>
The Budapest Open Access Initiative
http://www.soros.org/openaccess/
Today marks the official launch of the Budapest Open Access Initiative
(BOAI), the most important FOS initiative in a long time. This is the
public statement and plan of action that emerged from the conference in
Budapest I attended in early December (and described briefly in FOSN
for 12/5/01). Between the conference and today, the participants have
been drafting the statement and a few other documents to accompany it.
I'm very pleased with the result and very proud to have played a role
in it. Let me give you a quick tour.
The drafters of BOAI represent many perspectives on FOS, many different
nations, and many different FOS initiatives. The experience around the
table came from university research, libraries, philanthropy, and
non-profit and for-profit publishing. You can find the individual
drafters and their affiliations at the bottom of the main document, so
I won't repeat them here. The first point to make, though, is that
while disagreements were plentiful, we all saw that agreements were
more basic than disagreements. This diverse group agreed on a common
plan to achieve FOS.
The initiative endorses the goal of "open access", the term used by
BOAI for what I tend to call free online access. BOAI calls for open
access to peer-reviewed research articles in all academic fields and
the preprints that might precede them. It can easily and naturally be
extended to all digital content that its authors consent to disseminate
without payment.
BOAI endorses two strategies to achieve open access, and supports
experiments with other strategies that might prove effective. The first
strategy is what Stevan Harnad calls self-archiving. Authors put
preprints in institutional or disciplinary archives that comply with
the protocols of the Open Archives Initiative. When their articles are
published in peer-reviewed journals, they also archive either the
refereed postprint or a list of corrigenda (differences between the
preprint and the postprint), depending on the journal's permission
policies. The second strategy is to launch a new generation of journals
committed to provide open access to all their contents. The two
strategies are not only compatible; they are complementary. Putting
them together creates synergy and the acceleration of parallel
processing.
Both strategies are sustainable in the long term. We know this because
providing open access costs much less than traditional forms of
dissemination and much less than the money currently spent on journal
subscriptions. The only problem is the transition from here to there.
The BOAI is especially promising because it understands this and
mobilizes the financial resources to help make the transition possible.
George Soros' Open Society Institute (OSI), which convened the original
meeting in Budapest, is committing one million dollars a year for three
years to BOAI, and recruiting other foundations to add their support to
the cause.
What makes BOAI special is the way it embraces different approaches and
combines principle, strategy, tested means to the desired end, and
cash.
I'm especially pleased with the BOAI's friendliness toward the many
players in the landscape and its focus on constructive steps toward the
goal. The BOAI doesn't demand that existing journals change their
prices or their access policies. We hope they will, and we will even
help pay the costs of converting to a different business model for
journals willing to change. But if not, we'll just pursue our goal
without their participation. BOAI doesn't call for boycotts of any kind
of literature, any kind of journal, or any kind of publisher. It
doesn't call for violations of copyright or even for changes in
copyright law. It doesn't demand, and needn't wait for, any changes
from publishers, markets, or legislation. Scientists and scholars have
all the means within their grasp. The BOAI calls on scientists and
scholars to take up these means and use them, and it invites the
cooperation of all those disposed to help.
My considered judgment is that the primary obstacle faced by BOAI,and
the FOS movement in general, is misunderstanding. Most of the
objections we hear (about copyright, about quality and peer review,
about financing...) are based on misunderstanding. That's good news
insofar as it means that most resistance will melt away when our ends
and means are properly understood. But of course it's bad news if our
efforts to date have not done more to clarify our ends and means. The
BOAI is taking steps to disarm as many objections as possible with a
detailed FAQ. Not everyone will read it, of course. But for those who
do, it will answer 95% of the questions, objections, and anxieties that
similar initiatives have provoked in the past. Of course, FAQ's don't
change the world, and we have other tools for changing the world. But
if our primary obstacle really is misunderstanding, then the FAQ is one
of our most potent tools.
HOW YOU CAN HELP. You can help the BOAI by signing it, persuading your
institution to sign it, and spreading the word about it. A signature
indicates a pledge of assistance and participation. If you [or your
institution] are willing to self-archive your own papers, or submit
them to open-access journals, help launch new open-access journals [or
archives], or any of a number of things listed at the site, then you
[or your institution] should sign. Signatures don't call on others to
act, but demonstrate that someone is acting. The growing list of
signatures is a measure of our strength.
If you have questions about BOAI, send them to me (peters [at] earlham.edu)
and I'll try to answer them in the newsletter or the discussion forum.
BOAI Home page
http://www.soros.org/openaccess/
What you can do to help
http://www.soros.org/openaccess/help.shtml
(Separate sections for reseearchers, universities, libraries, journals,
foundations, professional societies, governments,and citizens.)
FAQ
http://www.earlham.edu/~peters/fos/boaifaq.htm
(The FAQ and the list of ways you can help, above, will remain open to
revision.)
See who has signed
http://www.soros.org/openaccess/view.cfm
Sign it yourself
http://www.soros.org/openaccess/sign.shtml
Open Society Institute
http://www.osi.hu/infoprogram/
* Postscript. I like the term "open access" and will start to use it
more often in the newsletter. It's not perfect, however. It's short but
not self-explanatory. We decided that this was better than a long
phrase that contained all the needed nuances. ("Free online access" is
more self-explanatory but still falls short; a truly self-explanatory
phrase would be very long.) The BOAI defines the term explicitly, which
frees it to trade off perspicuity for brevity. If the term and its
definition can spread, then we'll have a useful new tool for discussing
FOS issues. --Now all we need is a short term for the body of
literature to which this applies.
* PPS. The term "open access" is already spreading in this context. The
Scholarly Publishing and Academic Resources Coalition (SPARC) supports
both free and affordable scholarly journals, and has now flagged the
free ones on its web list with a bright yellow "Open Access" icon.
SPARC is an institutional signatory of the BOAI, and SPARC's director,
Rick Johnson, is one of the BOAI drafters.
http://www.arl.org/sparc/core/index.asp?page=c0
* PPPS. I expected to have no news accounts of BOAI to cite until the
next issue. But here are a few that just came out as I prepare to click
SEND.
Declan Butler, Soros Offers Access to Science Papers (for Nature)
http://makeashorterlink.com/?U21535A6
Ivan Noble, Boost for Research Paper Access (for BBC)
http://news.bbc.co.uk/hi/english/sci/tech/newsid_1818000/1818652.stm
Michael Smith, Soros Backs Academic Rebels (for UPI)
http://www.upi.com/view.cfm?StoryID=12022002-031227-9710r
[Alexander Grimwade, Open Societies Need Open Access (The Scientist)
http://www.the-scientist.com/yr2002/feb/comm_020218.html ]
[Denis Delbecq, L'abordage des revvues scientifiques (Liberation,
Paris)
http://www.liberation.com/quotidien/semaine/020214-050019088SCIE.html ]
[http://slashdot.org/]
More to come!
NOTE: A complete archive of the ongoing discussion of providing free
access to the refereed journal literature online is available at the
American Scientist September Forum (98 & 99 & 00 & 01):
http://amsci-forum.amsci.org/archives/september98-forum.html
or
http://www.cogsci.soton.ac.uk/~harnad/Hypermail/Amsci/index.html
You may join the list at the amsci site.
Discussion can be posted to:
september98-forum(a)amsci-forum.amsci.org
Szerintem roppant erdekes tema, Bergsontol Wittgensteinig
jut az embernek mindenfele eszebe rola.
AKit erdekel gondolom szerettel latjak, en csak fogadatlan prok. vagyok.
udv kgy
-------- Original Message --------
Subject: MEGHIVO
Date: Mon, 11 Feb 2002 15:05:49 +0100
From: Laki Janos <j.laki(a)helka.iif.hu>
To: KAMPIS GYÖRGY <gk(a)hps.elte.hu>
Kedves Gyuri!
Február 22-én 11-kor Petra von Morstein elõadást tart a Fil.
Kutatóint-.ben, melyre ezúton invitállak. A hölgy eredendõen
Wittgenstein-kutató, most a nem-individuális én-fogalomról fog beszélni
(a
Te biztonsági öved be van kapcsolva, ne félj!)
Kérlek, jelezz vissza, hogy tudsz-e jönni!
Üdv. János
Department of History and Philosophy of Science
Eotvos University
Budapest, Pazmany P. setany 1/A
PHILOSOPHY OF SCIENCE COLLOQUIUM
(http://hps.elte.hu/seminar)
________________________________________________
CHANGED! CHANGED! CHANGED!
February program
_______________________________________________________
C a n c e l l a t i o n!
Gábor Etesi & István Németi's talk originally scheduled for
18 February is postponed through illness for 11 March.
_______________________________________________________
18 February 4:00 PM 6th floor 6.54
(Language: English, except all participants speak Hungarian)
L á s z l ó E . S z a b ó
Theoretical Physics Research Group
Department of History and Philosophy of Science
Eötvös University, Budapest
Critical reflections on the Bayesian theory of confirmation
* Subjective probabilities
* Bayesian theory of confirmation
* Applications:
Design argument
Swinburne's Bayesian argument for the existence of God.
The antropic principle
* Criticism:
Bayesianism = misuse of conditional probabilities
Against a priori probabilities
25 February 4:00 PM 6th floor 6.54
(Language: Hungarian)
P é t e r H r a s k ó
Janus Pannonius University, Pécs
Mit mond a kvantumelmélet az alagúteffektus időtartamáról?
(What does quantum theory say about the duration of tunneling?)
A kvantumelmélet az alagúteffektus valószínűségét pontosan
megjósolja, de nem ad egyértelmű előírást az alagutazás
időtartamának a kiszámítására. Az utóbbi időben lehetővé
vált a probléma kísérleti vizsgálata fotonokkal, mert sikerült
olyan fóliát előállítani, amely foton-barrierként viselkedik.
Ez a fejlemény tette aktualissá az alagutazási idő problémáját,
amely összefügg a spontán állapotredukció kérdésével és
a kvantumelmélet alapjait érinti. A kérdéskörbe a R. Y.
Chiao, [http://ArXiv.org/abs/quant-ph/9811019] összefoglaló
nyújt bevezetést. Az előadás szorosan vett témáját a P.
Hraskó, [http://ArXiv.org/abs/quant-ph/0010056]
cikkben végzett alagutazási-idő számítás alapgondolata képezi.
___________________
The organizer of the seminar: László E. Szabó
--
Laszlo E. Szabo
Department of Theoretical Physics
Department of History and Philosophy of Science
Eotvos University, Budapest
H-1518 Budapest, Pf. 32, Hungary
Phone/Fax: (36-1)372-2924
Home: (36-1) 200-7318
Mobil/SMS: (36) 20-366-1172
http://hps.elte.hu/~leszabo
Februar 12-en d.e. 11 oratol A Szilard Leo professzori osutondij
atadasa lesz az ELTE TTK Aulajaban (Pazmany Peter setany 1/a fsz.).
a Dijazottak kozott lesz Barkoczi Ilona is.
A dijazottak eloadast tartanak, melyre szerettel varunk minden
erdeklodot!
K.j.
Tisztelt Kollégák!
Ezúton meghívunk minden érdeklodot a
LÁTÁS KLUB
alakuló rendezvényére, melynek
helye: Semmelweis Egyetem, Anatómiai Intézet, Könyvtár
(Tuzoltó u.58, bejárat az Ülloi út 93 autóbejáróján keresztül)
idopontja: 2002. 02. 21. 17 óra,
Kérjük, hogy a részvételi szándékot a következo címen jelezzék: neurokogart(a)freemail.hu
üdvözlettel,
Vidnyánszky Zoltán
Tisztelt Kollégák!
Ezúton meghívunk minden érdeklodot a
LÁTÁS KLUB
alakuló rendezvényére, melynek
helye: Semmelweis Egyetem, Anatómiai Intézet, Könyvtár
(Tuzoltó u.58, bejárat az Ülloi út 93 autóbejáróján keresztül)
idopontja: 2002. 02. 21. 17 óra,
Célunk rendszeres találkozás, ismeretszerzés és eszmecsere lehetoségének biztosítása a látás (valamint tágabb értelemben véve az emberi percepció és megismerés) neurobiológiája iránt érdeklodok számára.
Az elso találkozáson ismertetjük a Klub muködésével és programjaival kapcsolatos elképzeléseinket valamint bemutatjuk a Klubhoz kapcsolódó intézményeket és a bennük folyó munkákat
Kérjük, hogy a részvételi szándékot a következo címen jelezzék: neurokogart(a)freemail.hu
üdvözlettel,
Vidnyánszky Zoltán
Non-member submission from ["Laszlo E. Szabo" <leszabo(a)ludens.elte.hu>]
---
Date: Sun, 03 Feb 2002 21:29:29 +0100
From: "Laszlo E. Szabo" <leszabo(a)ludens.elte.hu>
To: mafla <mafla(a)hps.elte.hu>, fizinfo <fizinfo(a)sunserv.kfki.hu>,
Multiple
recipients of list <koglist(a)cogpsyphy.hu>
Subject: Javitas!!! PHILOSOPHY OF SCIENCE COLLOQUIUM, FEBRUARY
Az eluzu hmrdetisben Hrasks Piter eluadasanak datumat elmrtam. Elnizist
kirek! Termiszetesen 25-in lesz.
_______________________________
Department of History and Philosophy of Science
Eotvos University
Budapest, Pazmany P. setany 1/A
PHILOSOPHY OF SCIENCE COLLOQUIUM
(http://hps.elte.hu/seminar)
________________________________________________
February program
18 February 4:00 PM 6th floor 6.54
Gabor Etesi* ** (lecturer) and Istvan Nimeti**
* Yukawa Institute, Kyoto University, Japan
**Alfrid Rinyi Institute of Mathematics, Budapest
General relativistic- (and/or quantum-) computability; computing
non-Turing-computable functions in Malament-Hogarth spacetimes
It used to be a (meta) theorem of mathematical logic that
mankind will never know that ZFC (which forms the foundation
of mathematics) is consistent, assuming it is. We will argue
that this meta-theorem is gone, it is no more provable.
We will report on (convergent) results of various research
groups at various parts of the world coming, independently,
to the same conclusion which is, roughly, that Turing computability
may not (after all) be the final limit of the capabilities
of artificial computing devices. Some of the above mentioned
researchers are e.g. Hogarth (Cambridge), Malament, Earman,
ourselves, Kieu (Australia), F. Tipler, to mention only
a few.
We investigate the Church--Kalmar--Kreisel--Turing Theses
concerning theoretical (necessary) limitations of future
computers and of deductive sciences, in view of recent results
of classical general relativity theory. We argue that (i)
there are several distinguished Church--Turing-type Theses
(not only one) and (ii) validity of some of these theses
depend on the background physical theory we choose to use.
In particular, if we choose classical general relativity
theory as our background theory, then the above mentioned
limitations (predicted by these Theses) become no more necessary,
hence certain forms of the Church--Turing Thesis cease to
be valid (in general relativity). (For other choices of
the background theory the answer might be different.)
We also look at various ``obstacles'' to computing a non-recursive
function (by relying on relativistic phenomena) published
in the literature and show that they can be avoided (by
improving the ``design'' of our future computer). We also
ask ourselves, how all this reflects on the arithmetical
hierarchy and the analytical hierarchy of uncomputable functions.
(We note that the goal of ``computing the uncomputable''
is distincly more modest than executing so called supertasks.
Indeed, we do not claim possibility of the second.)
A paper advocating carefully and it detail the view we adopt
here -- that developments in the background physical theory
can influence profoundly the fundamentals of the theories
of computability and logic -- appeared in Bull. Symbolic
Logic Vol. 6 No 3 (2000), pp.265-283 by Deutsch et al. Our
paper on this subject is available on the following internet
address:
[http://ipsapp008.lwwonline.com/ips/frames/menu.asp?J=4779&S=36698&M=40800#]
A further useful reference is Hogarth, M.: ``Predictability,
Computability, and Spacetime'', pp.1-123, available from
[mh10026(a)cam.ac.uk].
25 February 4:00 PM 6th floor 6.54
Piter Hrasks
Janus Pannonius University, Pics
Mit mond a kvantumelmilet az alagzteffektus idutartamarsl?
(What does quantum theory say about the duration of tunneling?)
A kvantumelmilet az alagzteffektus valsszmn{sigit pontosan
megjssolja, de nem ad egyirtelm{ elumrast az alagutazas
idutartamanak a kiszammtasara. Az utsbbi iduben lehetuvi
valt a problima kmsirleti vizsgalata fotonokkal, mert siker|lt
olyan fsliat eluallmtani, amely foton-barrierkint viselkedik.
Ez a fejleminy tette aktualissa az alagutazasi idu problimajat,
amely vsszef|gg a spontan allapotredukcis kirdisivel is
a kvantumelmilet alapjait irinti. A kirdiskvrbe a R. Y.
Chiao, [http://ArXiv.org/abs/quant-ph/9811019] vsszefoglals
nyzjt bevezetist. Az eluadas szorosan vett timajat a P.
Hrasks, [http://ArXiv.org/abs/quant-ph/0010056]
cikkben vigzett alagutazasi-idu szammtas alapgondolata kipezi.
___________________
The organizer of the seminar: Laszls E. Szabs
--
Laszlo E. Szabo
Department of Theoretical Physics
Department of History and Philosophy of Science
Eotvos University, Budapest
H-1518 Budapest, Pf. 32, Hungary
Phone/Fax: (36-1)372-2924
Home: (36-1) 200-7318
Mobil/SMS: (36) 20-366-1172
http://hps.elte.hu/~leszabo
Non-member submission from ["Laszlo E. Szabo" <leszabo(a)ludens.elte.hu>]
Date: Fri, 01 Feb 2002 22:30:15 +0100
From: "Laszlo E. Szabo" <leszabo(a)ludens.elte.hu>
To: mafla <mafla(a)hps.elte.hu>, fizinfo <fizinfo(a)sunserv.kfki.hu>,
Multiple
recipients of list <koglist(a)cogpsyphy.hu>
Subject: PHILOSOPHY OF SCIENCE COLLOQUIUM, FEBRUARY
Department of History and Philosophy of Science
Eotvos University
Budapest, Pazmany P. setany 1/A
PHILOSOPHY OF SCIENCE COLLOQUIUM
(http://hps.elte.hu/seminar)
________________________________________________
February program
18 February 4:00 PM 6th floor 6.54
Gabor Etesi* ** (lecturer) and Istvan Nimeti**
* Yukawa Institute, Kyoto University, Japan
**Alfrid Rinyi Institute of Mathematics, Budapest
General relativistic- (and/or quantum-) computability; computing
non-Turing-computable functions in Malament-Hogarth spacetimes
It used to be a (meta) theorem of mathematical logic that
mankind will never know that ZFC (which forms the foundation
of mathematics) is consistent, assuming it is. We will argue
that this meta-theorem is gone, it is no more provable.
We will report on (convergent) results of various research
groups at various parts of the world coming, independently,
to the same conclusion which is, roughly, that Turing computability
may not (after all) be the final limit of the capabilities
of artificial computing devices. Some of the above mentioned
researchers are e.g. Hogarth (Cambridge), Malament, Earman,
ourselves, Kieu (Australia), F. Tipler, to mention only
a few.
We investigate the Church--Kalmar--Kreisel--Turing Theses
concerning theoretical (necessary) limitations of future
computers and of deductive sciences, in view of recent results
of classical general relativity theory. We argue that (i)
there are several distinguished Church--Turing-type Theses
(not only one) and (ii) validity of some of these theses
depend on the background physical theory we choose to use.
In particular, if we choose classical general relativity
theory as our background theory, then the above mentioned
limitations (predicted by these Theses) become no more necessary,
hence certain forms of the Church--Turing Thesis cease to
be valid (in general relativity). (For other choices of
the background theory the answer might be different.)
We also look at various ``obstacles'' to computing a non-recursive
function (by relying on relativistic phenomena) published
in the literature and show that they can be avoided (by
improving the ``design'' of our future computer). We also
ask ourselves, how all this reflects on the arithmetical
hierarchy and the analytical hierarchy of uncomputable functions.
(We note that the goal of ``computing the uncomputable''
is distincly more modest than executing so called supertasks.
Indeed, we do not claim possibility of the second.)
A paper advocating carefully and it detail the view we adopt
here -- that developments in the background physical theory
can influence profoundly the fundamentals of the theories
of computability and logic -- appeared in Bull. Symbolic
Logic Vol. 6 No 3 (2000), pp.265-283 by Deutsch et al. Our
paper on this subject is available on the following internet
address:
[http://ipsapp008.lwwonline.com/ips/frames/menu.asp?J=4779&S=36698&M=40800#]
A further useful reference is Hogarth, M.: ``Predictability,
Computability, and Spacetime'', pp.1-123, available from
[mh10026(a)cam.ac.uk].
18 February 4:00 PM 6th floor 6.54
Piter Hrasks
Janus Pannonius University, Pics
Mit mond a kvantumelmilet az alagzteffektus idutartamarsl?
(What does quantum theory say about the duration of tunneling?)
A kvantumelmilet az alagzteffektus valsszmn{sigit pontosan
megjssolja, de nem ad egyirtelm{ elumrast az alagutazas
idutartamanak a kiszammtasara. Az utsbbi iduben lehetuvi
valt a problima kmsirleti vizsgalata fotonokkal, mert siker|lt
olyan fsliat eluallmtani, amely foton-barrierkint viselkedik.
Ez a fejleminy tette aktualissa az alagutazasi idu problimajat,
amely vsszef|gg a spontan allapotredukcis kirdisivel is
a kvantumelmilet alapjait irinti. A kirdiskvrbe a R. Y.
Chiao, [http://ArXiv.org/abs/quant-ph/9811019] vsszefoglals
nyzjt bevezetist. Az eluadas szorosan vett timajat a P.
Hrasks, [http://ArXiv.org/abs/quant-ph/0010056]
cikkben vigzett alagutazasi-idu szammtas alapgondolata kipezi.
___________________
The organizer of the seminar: Laszls E. Szabs
--
Laszlo E. Szabo
Department of Theoretical Physics
Department of History and Philosophy of Science
Eotvos University, Budapest
H-1518 Budapest, Pf. 32, Hungary
Phone/Fax: (36-1)372-2924
Home: (36-1) 200-7318
Mobil/SMS: (36) 20-366-1172
http://hps.elte.hu/~leszabo