In 1987, machines started to replace humans in distributing tickets.
Except where working conditions were very bad, it was hard to justify replacing humans with robots.
Predominantly these vehicle are used to replace humans in hazardous situations.
But experts say the computers generally do not replace humans - they represent more of an add-on service.
In modern textile mills, doffing machines have now replaced humans.
This is because a lot of films and books show robots as replacing humans instead of helping them.
A device has been invented that not only replaces humans, but also lays them to rest.
It was his theory that we would eventually replace humans as the motivators in society.
Now there are worries that computers aren't replacing humans fast enough.