I agree with Orlando that there is no need for a conflict here. The Bayesian
paradigm provides a unified framework for decision making that integrates a
subjective interpretation of the past record and views of the future.
Further it is a paradigm that in a principled way modifies current beliefs
according to incoming data--Bayesian learning. In an important sense the
Bayesian paradigm does resolve the controversy.

George

On Thu, Jan 8, 2009 at 10:22 PM, Orlando Leibovitz <
[email protected]> wrote:

> Tom,
>
> Some of us look to both the patterns of the past and a subjective belief
> about the uncertain future when making decisions. And sometimes the way we
> interpret  past patterns is as subjective as our  anticipation of the
> future. Why set up a non existent conflict?
>
> O
>
> Tom Johnson wrote:
>
>   A sidebar conversation regarding the "reality" of models
>
> 'The story that I have to tell is marked all the way through by a
> persistent tension between those who assert that the best decisions are
> based on quantification and numbers, determined by the patterns of the
> past, and those who base their decisions on more subjective degrees of
> belief about the uncertain future. This is a controversy that has never been
> resolved.'
> — FROM THE INTRODUCTION TO ''AGAINST THE GODS: THE REMARKABLE STORY OF
> RISK,'' BY PETER L. BERNSTEIN
> See
> http://www.nytimes.com/2009/01/04/magazine/04risk-t.html?_r=1&ref=magazine
>
> -tj
> --
> ==========================================
> J. T. Johnson
> Institute for Analytic Journalism -- Santa Fe, NM USA
> www.analyticjournalism.com
> 505.577.6482(c)                                    505.473.9646(h)
> http://www.jtjohnson.com                 [email protected]
>
> "You never change things by fighting the existing reality.
> To change something, build a new model that makes the
> existing model obsolete."
> -- Buckminster Fuller
> ==========================================
>
> ------------------------------
>
> ============================================================
> FRIAM Applied Complexity Group listserv
> Meets Fridays 9a-11:30 at cafe at St. John's College
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>
>
> --
>
> Orlando Leibovitz
>
> [email protected]
>
> www.orlandoleibovitz.com
>
> Studio Telephone: 505-820-6183
>
> ============================================================
> FRIAM Applied Complexity Group listserv
> Meets Fridays 9a-11:30 at cafe at St. John's College
> lectures, archives, unsubscribe, maps at http://www.friam.org
>



-- 
George T. Duncan
Professor of Statistics, Emeritus
Heinz College
Carnegie Mellon University
(505) 983-6895

Life must be understood backwards; but... it must be lived forward.
Soren Kierkegaard
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