Principlev1PR-1175
Maintain selective permeability in boundaries by filtering…
Maintain selective permeability in boundaries by filtering inputs based on explicit criteria rather than blocking all inputs or accepting all inputs.
Why This Is a Principle
Derives from Goals as Perceptual Filters (goals as perceptual filters defining relevance) and Signal detection involves independent dimensions… (signal detection tradeoff). The cell membrane metaphor translates to a prescriptive principle: design boundaries as selective filters with defined criteria, not binary gates. Highly actionable and applies across all boundary domains.
Source Lessons
Boundaries are not walls
Boundaries are not about shutting people out — they are about defining the terms of engagement. A wall blocks everything. A boundary filters selectively.
Boundary flexibility is not boundary weakness
Adjusting boundaries based on context is different from abandoning them under pressure.