Comment What makes them ROBOTS? (Score 0) 44
Are they machines? Are they capable of deliberate movement? Do they have any decision-making of their own?
From TFA:
The externally generated [emphasis mine] magnetic fields made the robots spin and tumble through the liquid and squeeze through tiny water-filled gaps in the soil.
So, why are they referred to as robots? If I mulch my bushes — is each chip a "robot" fighting the weeds around the plant? When a brick wall is sanded, is each grain of sand a "robot"?