Now every worker can be fully stressed out doing routine work. As you become better at your task, your task gets faster. You'll never be on top of it.
It's worse than it apears in the summary: The Video also shows that the system highlights the item on the shelf with a laser, and a light tells the picker in which box this item goes.
The pickers now really has a robot job: See the laser beam, take the item, see the light, put in the box below.
He does not even need to read the order.
Illiterate people could do this job, maybe it's good news for them.