One difference that changes everything
Delegating to a person and delegating to a model share most of their structure. You decide what to hand over, you set the standard, you check the result, and you remain accountable.
One difference matters more than all the similarities. A person learns from correction and a model does not.
When you correct a colleague, the correction persists. Their next attempt is better, and the investment in explaining compounds. When you correct a model's output, the correction applies to that output. The next request starts from the same place, and the investment does not compound.
Two consequences follow directly.
Teaching effort should still go to people, because it is the only place it accumulates. A manager who spends their coaching time refining prompts and their delegation time on people has it exactly backwards.
And anything a model gets wrong repeatedly must be fixed structurally rather than conversationally. Better instructions in a reusable template, a changed workflow, a check in the process, or a decision to stop using it for that task. Correcting the same failure in each conversation is a cost with no end.
That framing makes the rest of this lesson tractable: the question is not can AI do this but does handing it over leave the team better off after verification.

