Can [validation attempted] ever be none for an attribute?

Assessment Outcome (Attribute) only applies to attributes that have
been assessed.  Since there is no difference between asessment and
strict assessment for an attribute, an attribute that has not been
strictly assessed will never have a [validation attempted] property,
so it is impossible for the [validation attempted] property to be
none.  Similarly the [validity] property can never be notKnown.

This seems odd.  An attribute with no type declaration cannot be
assessed (Schema-Validity Assessment (Attribute)), so it will never
have any PSVI properties, whereas it would be natural for it to have
[validation attempted] = none and [validity] = notKnown.

-- Richard