👉 Possession engineering is a critical aspect of software design that focuses on managing and structuring ownership and control over resources within a system. It involves creating mechanisms to clearly define who owns what in the system, ensuring that access and modifications are appropriately controlled and audited. This is achieved through techniques like ownership annotations, access control lists, and smart contracts in blockchain systems, which help prevent unauthorized changes and ensure data integrity. By effectively implementing possession engineering, developers can enhance system security, maintain consistency, and facilitate trust among users and stakeholders.