Proceding in the crosswalk when you have the right of way, delegating a task to a direct report, and having a friend deliver an important letter should all be fine.
But it pays to verify that the coast is clear, the assignment is understood, and that the task is complete.
We don’t need to move through the world as paranoid, micromanaging, and mistrusting, but we can bring judgment and increasing levels of trust to bear when appropriate.