I don’t think we actually know. That’s not to say that we haven’t tried to define it, containing it within the parameters of what we (think) we know. I could answer with the numbers consigned to the movement of the sun and the gradient of its light that the hands of my clock now point to: 20:23. Or the number of planetary resolutions around the Sun since the death of Christ: 2018. I could answer with a cultural polemic describing the shape of contemporary society and its difference from earlier societies. Or I could quote Shakespeare and suggest that “we are time’s subject, and time bids be gone”. I could answer that time flies; that it is lost, irretrievable, wasted. That it is short and that it is endless. That is, we can describe time and we use time itself to describe all manner of things. We cannot, however, define it. And I think that’s because we don’t, really, understand it. None of those answers are wrong, but not one of them looks you in the eye and, unflinchingly, absolves that this is all and everything that time is.
Noun: the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.
Verb: to plan, schedule or arrange when (something) should happen or be done.
Does time even exist? As a noun or a verb, time confounds simple ontological description. Whilst the progression of existence and events and the act of scheduling both suggest an ontology (‘progression’ or a ‘schedule’), neither are really so tangible nor definite as to refute the question of time’s existence in a satisfactory, end-of-argument way. Yet time, or whatever it is that we have so called ‘time’, irrefutably exists. It’s in the wrinkles that gradually write themselves across foreheads and the grey that slowly tinges the colour from hair. It’s in the consciousness that delineates a present from a yesterday and a tomorrow. It’s in the knowledge that two people will show up at the same place simultaneously (or, depending on punctuality, thereabouts) when they agree upon a ‘time’ to do so. In all this evidence, however, it differs. They all describe ‘time’, but the concept of a simultaneous meeting is not the same as an agent of age, nor is the concept of changing from young to old the same as understanding the distinction between what one has experienced and still hopes to experience. The differences are not to be understood as dichotomous: they overlap, blur into multiplicity, trap each other in intertextuality.