As the saying goes, you can't fix stupid. You can however help keep them from hurting themselves or the machine. I got a call to a shop once on a warranty job. It was a 2 Horiz. Linear Pallet Pool. Owner of the shop starts yelling at me the minute I walk in the door. One of his brand new Chick Tombstones and pallet are laying on the track inside the LPP. I was sure this was not a machine problem, as there was really no way the AGV could just " drop" a pallet. Fished the pallet out with the forklift and re-set up the cell system. Did a little checking and found a square black mark on the top rail of the set up station. Looked around the shop and found the handle for the tombstone on the other side of the shop. Matching mark to the setup station. Operator hid the evidence and blamed the machine-again.