If both wheels turn at the same speed, the machine follows a straight path.

With any luck, these machines would follow the same logic as those used by the Federation.

All the workers and machines were evidently following some sort of master plan worked out more than two thousand generations before.

We know how to write recipes and build machines to follow them.

The three ancient machines were probably following them, even now.

Yet they use the machine to follow Kolya into the past.

The eyestalk moved with him but the machine didn't follow.

There were marks on that surface which the machine followed.

The machine could follow him wherever he went anyway.

He was thinking deeply, and yet not with the logical trains of thought that machines must follow.