NAtural DIRectives

NADIRs

We need a set of principles to grasp the whole scope of bidding, and in particular to determine in a given bidding sequence:

1) What to bid with a given hand ?

2) What is partner's hand like ?

To formulate this set we shall use axiomatic method, ie:

1) several (3) principles shall be adopted as the evident truth (axioms) – not requiring a proof

2) axioms will lead us to logical conclusions

3) a method of deducing all further conclusions will be outlined and applied to any bidding situation.

Such an entire system shall be something what may be called „axiomatic algorithm”.

Axioms will be hence called „DIRECTIVES” because they are not formalized laws (my knowledge is inadequate for that) but only generalized recommendations, defining your procedure in the course of auction.

Obviously, the adopted directives must be fundamental and general. Not just because such is the procedure in axiomatization, but because the method of bidding generated this way will be – with high probability – the very real natural bidding. This shall be:

NBS	NATURAL BIDDING STYLE

There is something present by nature in any bidding system: – the exchange of information between bidders. That will be the starting point for formulation of the axioms–directives.

The natural question how such an exchange should take place and what it should be based upon – quite normally divides into three detailed questions:

When to inform ? ie (approximately): when to bid and when to pass (not to bid) ?

What to inform about and how to inform ? ie about what values and in what way ?

To what extent to inform ? ie when to transmit more information and when less ?

The NADIRs ( NAtural DIRectives ) are general answers to these questions !

There are three NADIRs:

SAD	=	Strength Assurance Directive	giving together a mnemonic SAD RED PAD
RED	=	Revealing Extras Directive
PAD	=	Precision Adjustment Directive

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