In Sign, an identity ceases to be what it is… at the moment when more than one system uses it at the same time.
One application uses it as permission.
Another treats it as a restriction.
A third evaluates risk.
The three receive the same credential.
The three respond differently.
All are correct.
But they do not match.
One allows.
Another blocks.
The third cannot decide.
There is no error.
But there is not a single possible action.
It is not verification… it is translation.
And when each system translates differently, the identity ceases to define access…
It starts to produce incompatible results depending on where it is used.
And at that point, any execution breaks the system that tries to resolve it.