The accidental cut is the sharp turned against its handler — the knife slipping toward the hand that guided it. It names carelessness at the edge, the tool's indifference to whose blood, and the paper cut's outsized sting: the small wound disproportionate to its cause.
Positive Resonance
The wound tended, care restored at the edge, the lesson small
Shadow Aspect
The knife toward the wrong hand, the small cut's outsized sting
Nuances
The knife slipping: the tool turned on its handler