I can count the shelves right now, my numbers on the floor are solid. But when the system says one thing and the shelf says another, matching them back up defeats me. I spent a whole afternoon chasing a gap of forty units that just would not close.
More people experience this than they realize.
You can count accurately, but reconciling the system against what's actually on the shelf defeats you.
If this sounds familiar, the Library can help you find the bigger picture.