Or it shows how insanely hard it is to make a flowchart to deal with actual reality. Here, try this: https://novehiclesinthepark.com/
Then imagine a rule set as complicated as “all rules required to ensure safe air travel” being redteamed by a population of a billion people with incentives varying from “personal convenience” to “fly into an occupied skyscraper” to “move ten pounds of cocaine.”
Now make that rule set enforceable by tens of thousands of people in a time and cost-effective manner.
Deferring a lot of authority to a somewhat sensible person on the ground is the only plausible approach.
Then imagine a rule set as complicated as “all rules required to ensure safe air travel” being redteamed by a population of a billion people with incentives varying from “personal convenience” to “fly into an occupied skyscraper” to “move ten pounds of cocaine.”
Now make that rule set enforceable by tens of thousands of people in a time and cost-effective manner.
Deferring a lot of authority to a somewhat sensible person on the ground is the only plausible approach.