> On Tue, 6 Feb 2007 09:43:18 -0500 Andrew wrote:
> AS> [...] In other words, the draft as written says, I think, that
> AS> administrator of site A is perfectly entitled to make decisions about
> AS> site B on the basis of reverse mappings, _but_, the administrator of
> AS> site A is cautioned that there are plenty of pitfalls in that
> AS> strategy, and they ought to be taken into consideration.
> AS>
> AS> I'd like to know whether people think that is a reasonable thing to
> AS> say. If the answer is, "No," then I'm not sure what we can say about
> AS> reverse mappings at all.
It is never reasonable to describe unreasonable behavior as somehow
reasonable.
Everyone is entitled to be unreasonable in their personal decisions; its
a free society. So, in that sense, administrator A is _entitled_ to make
decisions based on the reverse mappings of site B. Administrator A is
also _entitled_ to wear a tinfoil hat. The entitlement to do an act
does not make that act reasonable.
However, it is quite another thing to say that those decisions are
"reasonable". "Reasonable" decisions are well-founded on the basis of
actual facts and deductive logic. Decisions that are not based on
actual facts and deductive logic are, by definition, "unreasonable".
There are no facts or deductions regarding security that can be properly
inferred by administrator A based on the reverse mapping entries of site
B. The decisions described in the draft's examples that administrator A
could take on the reverse mapping entries of site B are therefore
_unreasonable_. There is no way around that.
You are merely confusing administrator A's _entitlement_ to make a
decision with administrator's A access to actually true facts and use of
deductive logic. One is entitled to be irrational, but being irrational
is the opposite of being reasonable. Being reasonable _requires_
actually true facts and deductive logic.
Reverse mapping entries do not provide one with actually true facts, nor
do they provide one with necessary and sufficient conditions on which to
base deductions about the security of site B.
--Dean
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