When (b) then the process can be the thing that triggers "thinking hard", and when (a) the one's mastery can be the reason one "thinks hard" when driving the agent.
Does this help TFA? Idk. Maybe if TFA can try either doing (a) a lot or (b) a lot it might. Or maybe agentic programming is going to drive out of the business those who stop thinking hard because they have agents to help them.