Things can only be used securely if they have properties that can be reasoned about and relied upon.

This is why we don't usually have critical processes that depend on "human always does the right thing" (c.f. maker/checker controls).

They can be reasoned about and relied upon.

The problem is that people/users/businesses skip the reasoning part and go straight to the rely upon part.

	▲	withinboredom a day ago \| parent [-]
		They can be reasoned about from a mathematical perspective yes. An LLM will happily shim out your code to make a test pass. Most people would consider that “unreasonable”.