version 3 by Jon Ingold
Section - check rules prevent all except homogeneous non-empty classes
Check an actor multiexamining when not really doing a multiple action (this is the divert to examine rule):
try the actor examining the noun instead.
Check an actor multiexamining (this is the check classes rule):
if we can't find a representative, say "Those are quite different. You'll have to be more specific." instead.