Time, as the individual experiences it, is called one-dimensional for an analogous reason: one number is all that is required to determine and mark out any particular event of a series from all the rest.

If the attention has become 'riveted to the object of its practical interest' to the extent that this is the only good the creature knows, then is its thought-form one-dimensional even though its bodily movements are three-spaced.

Their purpose makes the road one-dimensional.

Life was not able to maintain itself on land until it had overcome this one-dimensional limitation.