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Re: [Phys-l] Climate change?



Hi Rick:
If you "haven't a clue", then you are hardly in in a position to make a contrary argument. Why don't you find out where we disagree on the issues, and then make your argument?
Regards,
Jack



On Sat, 5 Apr 2008, Richard Tarara wrote:


I haven't a clue what Jack is talking about in relationship to laying out
the possible degrees and consequences of global warming and then providing a
rough probability (likelihood) of reaching each. I would think a 2-3 degree
increase in temperature is much more likely than the melting of the entire
Antarctic ice sheet. If nothing else, take the umpteen models and their
best and worst case predictions and do some statistics on that. It boils
down to a matter of finite resources, multiple threats, and distributing
those resources and our energies in a way that gives us the best chance of
minimizing or eliminating --the negative effects/dangers of all. If we take
all of the threats to humanity--Climate, Disease, Asteroids, (Chemical,
biological, or Nuclear) War, Starvation, etc. in the worst case forms--then
we're stuck with trying to solve all of them immediately (or sooner) and
that just isn't possible. We have to have a basis for prioritizing and
allocating effort and resources. What would you suggest?

Rick

----- Original Message -----
From: "Jack Uretsky" <jlu@hep.anl.gov>


I have had a long-standing complaint about certain habits of economists.
I insist that it is nonsensical to put numerical probabilities on the
occurrence of one time events, as is the habit of inhabitants of the
University of Chicago economists.

The intellectual support for this category of nonsense is something called
subjective probability - which is OK, as far as it goes. But when people
insist on differentiating subjective probability functions, which cannot
be subject to any kind of smoothness constraints, they are wandering into
fantasy land.
Regards,
Jack



On Sat, 5 Apr 2008, Richard Tarara wrote:

Since this topic has come up and because certain people are assuming that
anyone who is even slightly skeptical of the Global Warming
science/reports/PR is somehow 'seriously flawed' (to put it kindly), let
me
outline a course of action on Global Warming that was presented on
another
list but comes from an economist--one with deep Physics roots. This is
my
version of his plan.

1) Layout the levels of Global Warming and their consequences--from very
mild to catastophic. Do the best we can to determine the relative
probablities of these.
2) Layout a plan of action to that would minimize the adverse effects at
each level.
3) Estimate what is would cost--all types of costs--to do each of these.
4) Determine where Global Warming ranks with other threats/concerns that
will compete for the time/labor/money available. [more on this below].
5) Now pick an appropriate plan of action--based on the probablities,
the
priorities, and the available resources.


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