[blml] L25A or not

[Laval Dubreuil]

Herman writes:

I was directing in Pula (Croatia) last week, and this ruling created 
some controversy among us TDs:

East opens 1D and South puts 1NT on the table.

West enquires and North says "16-18".

Now South looks at the table in front of him and utters the classical 
"ooops", saying he intented to bid 1S.

FWIW, I was convinced that the error was mechanical.
And it was also clear to everyone that South only looked at the table 
after hearing (and being surprised at) North's explanation of what he 
thought was his natural spade bid.

So, does L25A apply or not?
______________________________________________________________________

Why not ?

That is why this famous Law 25A is for.
Partner did not make a call, the call was inadvertent and there was
not "pause for thought" (no change of mind).
I think we must trust players when no other evidence.

But I know you know that Herman.
Where is the trap ? North's explanation ?

Laval Du Breuil
Quebec City