“Time (14:155d), or more properly the accident of “when” (quando), confers on corporeal substances that exist in the changing world of time a type of accidental existence by reason of their temporal situation. “When” is therefore a category of real being; it has extrinsic denomination from time [§19.4] as its measure.” (PART 1. // CHAPTER 2 LOGIC. // [Section] MATERIAL LOGIC §9. CATEGORIES // [paragraph] 9 // [page] 30)
Obiter Dicta: In his An Essay on the Development of Christian Doctrine, Cardinal John Henry Newman (A.D. 1801 to 1890) wrote, “In a higher world it is otherwise, but here below to live is to change, and to be perfect is to have changed often.” (chapter 1, section 1, part 7). Change is a necessary part of our contingent world and existence. Because there is change, things are one way and then they are another way and then another way; e.g. the acorn becomes an oak tree, the cold rain become frozen on wires, the child becomes an adult. One can then refer to a condition or these states as “when”; e.g. “when I was a child”, “when I became an adult”, etc.
We today, often think of time, understand time, perceive time to be an actual condition of our existence and lives. Like the atmosphere within which we exist, like the gravity that causes us to fall, the world in which we live, we think of time as an actual condition within which we live. In short, we think and understand that time would continue to exist even if there were no sentient beings which perceived time. We think of time as a thing which has its own existence.
Time may be an actual thing, the nature of which is much as we perceive it in ordinary everyday reality. Or time may be a reality in a different sense. One such differing concept involves measuring change in terms of the passage of a photon of light along a very small (i.e. sub-sub-atomic) length, referred to as planck length; the measure of the passage of that photon being referred to as planck time; a scale shorter than which has no meaning. But it is also possible that time does not exist at all. Or, it is possible that time is an actual construct of our mind only which allows us a context within which to understand change within the world.
One might object to such differing concepts of time by saying that the ordinary experience of time seems so real that this experience of time must be the real thing. Well, look at some wall in the room in which you are now sitting. Walk up to that wall. Touch that wall. Lean against that wall. Push against that wall. Feel how it does not move despite your effort to move it. This causes us to think of that wall as a continuous physical thing. And yet, our science has proved that that wall, and all walls like it, are not solid things but rather a complex interlapping and intermeshing of forces and fields which exist at the subatomic level. When I push against the wall with my hand or I lean against that wall for support, its intermeshed and interlapping field of forces oppose the same type of interlapped and intermeshed forces and fields in my hand or body. And yet, to the evolutionary development of how our senses take in the world in which we live and move, that wall seems like a solid thing.
Another similar assault to our evolutionary developed sense perception of the reality surrounding us involves color; such as the red/orange color of maple tree leaves in the fall, the green color of the planet Uranus, the colors of a flag. Outside of and independent of our eyes, such colors do not exist. What exists in reality are various wavelengths of light. Once these photons of varying wavelengths enter our eyes, the process begins by which the energies of these photons are changed into chemical and electrical reactions at the retina of the eye and in the optic nerve cord and finally within the synaptic circuitry of the brain itself. It is here that the perceptions and concepts of various colors appear.
In a similar way, we cannot be sure if time exists or what its exact nature is. Nor are we certain of just how our senses and mind and speech interact with and handle time. For example, it seems that most forms of human speech are tensed; that is, they have verb conjugations providing terms which distinguish between past and present and future. And yet, we must ask if our tensed speech, instead of allowing us to perceive and display the world as it is, is a tool of our evolutionary development which provides us a context to function within a world/universe/creation which is as timeless as the wall of which we spoke above is not solid and as colorless as the red/orange leaves of autumn.
Regardless; however, of the uncertainty and confusion we have about the reality of time, we can be certain that change is real. And the reality of change allows for the distinguishing category of “when”.
Key: For an explanation of the reference and cross reference forms used in this book (e.g. [§19.6] and (11:292c), see previous posts in this blog entitled “The Elements of Philosophy: Preface (7)” and “The Elements of Philosophy: Preface (8)”.