Pavitra wrote:

There's little point in a security level higher than the power of the
securing rule.

Actually, that's under the old system.  Under the new system, there
would be little point in a security level higher than the power of the
rule defining security levels.  (And so that rule should have Power 3,
otherwise other rules with Power 3 can't use it to full effect.)

Oh yes, I meant to write in a clause about that. Append the sentence
"A rule CANNOT specify a security level greater than its own power."

And so this makes some sense (assuming that security levels can ever
be different from Power); we probably don't want a rule with Power 2
declaring a security level of 3.

I hadn't considered the other direction (a rule declaring a security
level lower than its Power).  Now that I do, it seems equally pointless,
e.g. why bother enshrining the basic behavior of some concept in a
Power 3 rule if you're going to let Power 2 rules modify that behavior?

In short, I don't see any good reason for a security level different
from the securing rule's Power, in either direction, and so I don't see
any good reason to define security level as a separate concept.

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