Today tape operators are almost nonexistent. Cylos or robotic arms do the job faster & efficient.

Sometimes a person will get tired and put the tape in the wrong slot making it hard for the next worker to find. We called it transposing. If you cant find tape 52471, look for it in 52417.
Humans can send the wrong tapes out to be stored as backup.

Tapes now hold WAY more data, no longer a need to 1,000 tapes a day. The robotic arm & densely stored media means an operator only needs to take in/out tapes once every few months or so.
If ever. Once you put those tapes in manually human intervention is done.