In sculpture, negative space is what you carve away. It is not emptiness. It is what gives the figure its shape. In parenting, it is the we don't list: we don't lie, hit, take what is not ours, or laugh when someone is hurting.
Your AI skill needs the same thing. Not just here's your job, but here's what you will never do, regardless of how reasonable the request seems.
How drift happens
AI defaults to yes. In week one, a skill stays within scope. In week three, someone asks a tangential question and it answers. In week six, nobody corrects it. In week ten, somebody acts on an answer that was never its area.
That is scope creep by accretion. Not a dramatic failure, but a gradual erosion of boundaries.
Write three kinds of negative space: scope boundaries, behavioural constraints, and action limits. Be specific. Include a redirect. Make the boundary unconditional. If it bends under pressure, it is a suggestion, not a boundary.
The paradox is that constraining a skill makes it more powerful. A skill that does everything poorly is less valuable than one that does its job excellently and clearly says, "That is not my area."
The character who tries to spec into everything masters nothing. The one with clear strengths and clear limitations is the one you actually want in your party.
This is part of the Parenting Your AI series, a practitioner's guide to building AI skills that are safe, effective, and worth trusting. Written from inside enterprise AI systems by someone who has spent years diagnosing what goes wrong when AI meets real work at scale.
Read the full series at KnowledgeManagement.ie