Humans are terrible for supervising mostly functional machines. This was researched in the context of security guards, who had a 95% missrate after just 20 min

Humans are terrible for supervising mostly functional machines. This was researched in the context of security guards, who had a 95% missrate after just 20 minutes on the job. It is entirely unreasonable to expect a human supervise to detect and correct this type of situation in time.