Recognition of human capabilities in attention in repetitive tasks is important. As an earlier commenter said, lifeguards are limited to 30 minute intervals in

Recognition of human capabilities in attention in repetitive tasks is important. As an earlier commenter said, lifeguards are limited to 30 minute intervals in their experience. I think baggage screeners with TSA (this is not an endorsement or attack on 'security theater', but an acknowledgement of how they address this issue) have similar time limitations due to focus drop off. I think the TSA also keeps scanners on their toes by digitally placing contraband in the bag pictures at various intervals to make sure the scanner is able to stay engaged (and maybe to get some metrics on hit/miss rates). Maybe these supervised self driving cars need to project a deer jumping into the road and log the driver's response or something.