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"Worst case scenario": proposed adjustment

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Berkeley Brett - 10 Feb 2010 17:56 GMT
The phrase "worst case scenario" is often used, though the scenario
indicated by it is sometimes so unlikely that it is scarcely worth
considering.  By definition, the "worst case" is an extreme: it
contains the most horrid tip of the bell curve of possible events.

To make the phrase "worst case scenario" more useful, I propose the we
prefix a percentage to it, such as:

"the 5% worst case scenario"

What such a phrase would mean is "the worst case scenario that has at
*least* a 5% chance of happening" (within a specified situation and
time-frame).

An example: the likelihood that (within our lifetimes) a meteor might
strike the Earth in such a way that 30% of the human population would
die is far less than 5%.

It would not be the "5% worst case scenario."

However, the likelihood that some natural disaster, genocide, or war
might result in the unexpected deaths of 1 million or more persons (in
the next 50 years somewhere on Earth, and within the time-frame of 6
contiguous months) is probably significantly greater than 5%.  (The
extremely sad news out of Haiti is evidence that events approaching
this scale do happen.)

Sadly, this would be a candidate for a "5% worst case scenario" for
the human population in the situation and time described.

Any thoughts you might have on this are most welcome....

(By the way, if you would like to help the sad people in Haiti, you
might check out the "Charity Navigator" comparisons of charities which
are providing relief, along with charities addressing other important
issues):

http://www.charitynavigator.org/

--
Brett (in Berkeley, California, USA)
http://www.electoralmaps.org/
Pictorial election results for every U.S. Presidential Election from
George Washington to Barack Obama.
JimboCat - 10 Feb 2010 18:24 GMT
> The phrase "worst case scenario" is often used, though the scenario
> indicated by it is sometimes so unlikely that it is scarcely worth
[quoted text clipped - 5 lines]
>
> "the 5% worst case scenario"

We already have a plethora of such terms, many of which begin "twenty-
year...", though the 1% case is a bit more, uh, "storied":

100-year flood
http://geography.about.com/library/faq/blqz100yearflood.htm

It doesn't help to make a phrase "more useful" if you simultaneously
make it so ugly that nobody would use it at all. Just try saying "the
five percent worst-case scenario" out loud. Ick. And then it isn't
"worst" any more. No: fact is, I hate it.

I think the concept of percent is perhaps too hard for the average
person to understand intuitively. They'll misunderstand the x-year
phrases, too, but at least they will *think* they understand them.

Jim Deutch (JimboCat)
--
"We live in an age where True Names give you power (where a True Name
is one close enough to the correct spelling that Google knows what you
mean.)" [David M. Palmer]
Mike Lyle - 10 Feb 2010 20:49 GMT
>> The phrase "worst case scenario" is often used, though the scenario
>> indicated by it is sometimes so unlikely that it is scarcely worth
[quoted text clipped - 20 lines]
> person to understand intuitively. They'll misunderstand the x-year
> phrases, too, but at least they will *think* they understand them.

I just wish they'd stop calling it a "scenario".

Signature

Mike.

Fred - 11 Feb 2010 02:15 GMT
>>> The phrase "worst case scenario" is often used, though the scenario
>>> indicated by it is sometimes so unlikely that it is scarcely worth
[quoted text clipped - 22 lines]
>>
> I just wish they'd stop calling it a "scenario".

I agree. 'The worst case imaginable' always sounds better to me.
Steve Hayes - 11 Feb 2010 07:39 GMT
>"Mike Lyle" <mike_lyle_uk@REMOVETHISyahoo.co.uk> wrote in message
>> I just wish they'd stop calling it a "scenario".
>
>I agree. 'The worst case imaginable' always sounds better to me.

No doubt. But even though it may be unpleasant to imagine it, a scenario to go
with it is more useful to help one to cope with it.

Signature

Steve Hayes from Tshwane, South Africa
Web:  http://hayesfam.bravehost.com/stevesig.htm
Blog: http://methodius.blogspot.com
E-mail - see web page, or parse: shayes at dunelm full stop org full stop uk

John O'Flaherty - 10 Feb 2010 20:38 GMT
>The phrase "worst case scenario" is often used, though the scenario
>indicated by it is sometimes so unlikely that it is scarcely worth
[quoted text clipped - 34 lines]
>
>http://www.charitynavigator.org/

First, you need a framework to define the word "worst". "Most horrid"
just begs the question. Then, you've specified 50 years, 1 million
people, and a "time frame" of six months, but those specifications
don't appear in your 5% phrase, and there's nothing uniquely suitable
about those particular parameter values.
There may be some uses of "worst case scenario" that need
improvement, but it's unlikely that substituting an equally
under-specified phrase will supply it. Actually, a number giving it a
false specificity is worse than the original vagueness.

Signature

John

Steve Hayes - 11 Feb 2010 07:46 GMT
> First, you need a framework to define the word "worst". "Most horrid"
>just begs the question. Then, you've specified 50 years, 1 million
[quoted text clipped - 5 lines]
>under-specified phrase will supply it. Actually, a number giving it a
>false specificity is worse than the original vagueness.

A worst-case scenario operates on the assumption that if anything can go
wrong, it will.

Say an earthquake, with lots of collapsed buildings.

You need heavy lifting equipment, but the harbour entrance is blocked, the
roads are blocked, and the airport runways are blocked.

Yopu need fresh water, but the pipes are broken, and the sewers have broken
spilling sewage into the only river that used to have potable water.

You need blood for transfusions, but most of the population are HIV positive
and the testing equipment got carried off when the boat bringing it it was
swamped in heavy surf.

Signature

Steve Hayes from Tshwane, South Africa
Web:  http://hayesfam.bravehost.com/stevesig.htm
Blog: http://methodius.blogspot.com
E-mail - see web page, or parse: shayes at dunelm full stop org full stop uk

R H Draney - 11 Feb 2010 18:04 GMT
Steve Hayes filted:

>A worst-case scenario operates on the assumption that if anything can go
>wrong, it will.
[quoted text clipped - 10 lines]
>and the testing equipment got carried off when the boat bringing it it was
>swamped in heavy surf.

Is that what's troublin' you, friend?...

Lift your head up high and take a walk in the sun with that dignity and
stick-to-it-iveness!...and you *show* the world!...you *show* them where to get
off!...

You'll never give up!...never give up!...never give up -- that ship!...r

Signature

A pessimist sees the glass as half empty.
An optometrist asks whether you see the glass
more full like this?...or like this?

Bertel Lund Hansen - 10 Feb 2010 20:46 GMT
Berkeley Brett skrev:

> The phrase "worst case scenario" is often used, though the scenario
> indicated by it is sometimes so unlikely that it is scarcely worth
> considering.

But scenarios scarcely worth considering are somtimes worth
considering. If the consequences of the worst case scenario are
horrible and can be avoided with almost no drawbacks, that would
be a wise move.

Programmers for example often have to deal with worst case
scenarios - however unlikely they may be. We do not want a bank's
central computer to enter an infinite loop in ther middle of a
crucial transaction.

> To make the phrase "worst case scenario" more useful,

It can hardly become more useful to me than it already is.

Signature

Bertel, Denmark

Roland Hutchinson - 11 Feb 2010 04:28 GMT
> Berkeley Brett skrev:
>
[quoted text clipped - 13 lines]
>
> It can hardly become more useful to me than it already is.

It needs one adjustment: a hyphen.

Signature

Roland Hutchinson       

He calls himself "the Garden State's leading violist da gamba,"
... comparable to being ruler of an exceptionally small duchy.
--Newark (NJ) Star Ledger  ( http://tinyurl.com/RolandIsNJ )

Hatunen - 12 Feb 2010 21:29 GMT
>Berkeley Brett skrev:
>
[quoted text clipped - 11 lines]
>central computer to enter an infinite loop in ther middle of a
>crucial transaction.

In the past the nuclear power industry has had a tendency to
decide that some potentially catastrophic scenarios are too
extreme to actually take account of.

Yellowstone super-volcano is a good worst case scenario. Every
now and then it erupts and destroys a very large area, but in the
past there hasn't been a modern nation built up around
Yellowstone.

Another series of New Madrid earthquakes would be another such
case.

Signature

  ************* DAVE HATUNEN (hatunen@cox.net) *************
  *       Tucson Arizona, out where the cacti grow         *
  * My typos & mispellings are intentional copyright traps *

Fred - 10 Feb 2010 21:28 GMT
> The phrase "worst case scenario" is often used, though the scenario
> indicated by it is sometimes so unlikely that it is scarcely worth
> considering.

Well, worst does actually mean worst.
 
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