When we first learn Django, models are usually explained in a very concrete way. One model maps to one database table, the relationship is one-to-one, and each row represents an instance of that model. This mental model works well for most use cases ...
Definition When we design software systems, we often discuss rules, validations, and best practices. These concepts are familiar and useful, but they operate at the surface level of system behavior. Beneath all of them lies a much stronger idea—one t...
Responsibility Drift and the Loss of System Meaning
Tracing a Single Request Through Authority, Validity, and State
From Capability to Contextual Validity
Where Permissions End, Authorization Continues
