Most of the time people spend on a quote, a work order, or a schedule is not judgment. It is checking whether the part number exists, whether the price sits inside the band, whether the machine can run the job, and whether a required field is empty. Those checks do not need a model. They need a rule.
A deterministic check is a rule with no mood. Ask it the same question twice and it gives the same answer. It does not get more generous on a Friday. It does not invent a part number because the sentence sounded confident.
Speed
The assistant can pull the history, the drawing, and the last similar job, and put a draft on the screen. The rules run before a person does. If the part is missing, the price is outside the band, or the quantity is over the limit, the draft never reaches the person who would have spent twenty minutes finding that out. The person sees the cases that already passed the obvious tests, and the cases the rules stopped.
Accuracy
A person checking the fiftieth quote of the day will miss a credit hold. A rule will not. The limit comes from the controlled drawing, the margin band, the routing, or the stock record, not from the assistant's wording. When the rule and the record disagree with the draft, the draft loses.
Cost
You do not pay a model to ask whether a part number is real. You do not pay a planner to retype a work order that should have been rejected for a duplicate. And you do not pay for the purchase order, the scrap, or the shipment that went out because a guess was treated as a fact. The cheap check is the one that runs every time, before anyone approves anything.
Where the rule stops
A rule can say the request is complete and inside the limits you already wrote down. It cannot decide that a thin set of readings is enough to name a failed part. That is a judgment. Judgments stay with a person. The check's job is to keep the obvious mistakes out of the queue so the person spends time on the ones that need them.
Start with one document your team already trusts: the margin band, the routing, the inspection limits, the lockout step. Turn that into a check that runs on every draft. Measure the time from request to a clean draft, the share of drafts sent back for a basic error, and the cost of the ones that should never have been submitted. If those three do not move, the check is in the wrong place.