The document discusses five rules for effectively assimilating a design system into an organization: 1. Provide stability and flexibility using major and minor versions to allow for changes while maintaining consistency. 2. Resist FOMO (fear of missing out) by regulating what components teams can update to in order to prevent breaking changes. 3. Become a gatekeeper by applying "Noah's challenge" - evaluating if new requirements can be met within the existing design system before making exceptions. 4. Provide incentives for teams to use the design system components by making them off-the-shelf, native, and tailored to technology. 5. Squeeze the design system into the organization gradually from the bottom-up while