Re: Republicans think destroying UAW is worth a depression

In article <d6i4l.47$em5.1@xxxxxxxxxxxx>,
"Karl Johanson" <karljohanson@xxxxxxx> wrote:

"Keith F. Lynch" <kfl@xxxxxxxxxxxxxx> wrote in message
news:gipq3s$9ue$1@xxxxxxxxxxxxxxxxxxx
Karl Johanson <karljohanson@xxxxxxx> wrote:
"Keith F. Lynch" <kfl@xxxxxxxxxxxxxx> wrote:
*Shoe stores* used to have X-ray machines. It's just as well that
they no longer do, since X-rays are dangerous.

X-rays above a certain dose are dangerous.

Nobody knows whether the risk is linear with the dose, or whether
there's some perfectly safe non-zero dose. The risk from a single
exposure is small, but in case it's not zero it makes sense to only
undergo an X-ray when the benefits exceed the highest plausible
likelihood of risk.

That's only true if there's more evidence that low doses are bad for you
than good for you.

It's false even then.

Suppose you think the risk might be 1 unit or might be 100, and the
benefit is 90 units. Unless you think the odds of 100 are pretty high,
you are better off undergoing the X-ray.

Why should you act as if the "highest plausible" was certain to be the
case?

--
http://www.daviddfriedman.com/ http://daviddfriedman.blogspot.com/
Author of
_Future Imperfect: Technology and Freedom in an Uncertain World_,
Cambridge University Press.
.

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