Silence at the Edge
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Where a knowledge base's rules run out, the system is silent — not "I don't know," which would itself need a rule, but bare nothing.
Show
A plant with only brown tips: no rule body is satisfied, the fixed point is the facts themselves, and the clinic offers nothing.
Watch for
Silence and ignorance-awareness are different capabilities; this machinery has only the first.