Human-assisted robot save time because humans are feeling tired and have a limited amount of time. But the robot is feeling tired, just like humans. Replace the humans have 24 hours.
Robots help people save time Because people are tired and there is a limit of time. But robots do not feel tired like humans. The man was able to work 24 hours a day.
Robot assisted human time. Because people are tired and there is a limit of time. But the robot without feeling tired, like a human. Able to work instead of humans 24 hours.