Highly coordinated motion is acceptable and familiar if it is regarded as being an effect of a large-scale change and not the cause of it. However, the words ‘cause’ and ‘effect’ somewhat beg the question of time-asymmetry. In our normal parlance we are used to applying these terms in the sense that the cause must precede the effect. But if we are trying to understand the physical difference between past and future, we have to be very careful not to inject our everyday feelings about past and future into the discussion unwittingly.
Time asymmetry.
