That’s perfectly expected. But the key is: narrowing the estimate isn’t free. You can’t pull a different estimate out of thin air. And zero people will expect

That’s perfectly expected. But the key is: narrowing the estimate isn’t free. You can’t pull a different estimate out of thin air. And zero people will expect it. The developer needs to say “I can say 10-100 days right now in this meeting, but given just 1 day of investigating, I’ll narrow the estimate range by an order of magnitude”.