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Proposal for a "Principle" that captures current consensus on approach of flow-sensitive type and effect checking for safety, at a high level.
The intent is not to provide a concrete detailed safety model, but capture what seems settled in the current debate, how it differs from Rust type- and borrow-checking approach (which is also flow sensitive), and identify open questions to be settled on the path to a concrete safety model.
TODO: add summary and links here