[blml] "Demonstrably" - practical meaning?

Jerry Fusselman jfusselman at gmail.com
Mon May 12 20:57:15 CEST 2008


On Mon, May 12, 2008 at 1:05 PM, Eric Landau <ehaa at starpower.net> wrote:
>
> I like the "opposite adjustment" test.  A player with UI has
> successfully chosen action A over action B, and you must decide
> whether A was "demonstrably suggested over" B.  Imagine that the same
> player, with the same table action, had chosen B, and that the deal
> was such that B turned out to be the winning decision rather than A.
> Would you consider adjusting the score under those circumstances?  If
> you would, you should not adjust now (or then).
>
> IMO this appropriately reflects the apparent intention of the authors
> who, in 1997, carefully changed the key word in L16A from
> "reasonably" to "demonstrably".
>


Oh, I agree!  The opposite-adjustment test is magnificent.  It would
have prevented dozens of errors that appear in the ACBL casebooks.  I
think that failure to apply the opposite-adjustment test is one of the
easiest ways for the director or committee or panel to err.

Jerry Fusselman



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