deep-fusion-vs-plugin-install-for-capability-upgrades
When integrating external capability repos, Deep Fusion (absorb intelligence into existing skills) beats Plugin Install (install as-is alongside existing skills). Plugin Install creates skill overlap between similar capabilities (e.g., Impeccable anti-slop vs frontend-taste anti-slop) which violates Law #2 (Zero Ambiguity) and doubles context window cost with competing intelligence sources. Deep Fusion routes each novel insight to exactly one canonical skill home.