It used to take many people to plow a field. Then the steel plow was invented, and it only took 1 person. The work got done with only 1 person. Now if a robot can do it, that&#x27;s only 1 additional job eliminated. It is certainly precedented. It used to take a professional to work an elevator. Then it became so easy that we didn&#x27;t need an elevator man. The work got done without any person.