Or rather, you need to know you don’t know. And you need your team to know you don’t know and want their help.
How else can they know they need to look out for missing information?
They need to know that you will welcome them saying you might have overlooked something, made an error, or not noticed something important – or at least not bite their head off when they tell you.
That’s the difference between the professional and the amateur: The professional doesn’t let the issue land in their ego.
This principle is rather obvious skippering a yacht, for example. Get it wrong and you usually get immediate and probably uncomfortable feedback from your environment. You need the crew to tell you things before you make a mistake, not after.
Otherwise you might hit the rocks.
Running an organisation, the principle is even more true, just a bit less obvious.