A discussion of time becomes imprecise when the same word denotes physical relations, experienced duration, and the practical cost of an interval.
Four Modes of Time
Four levels can be distinguished:
- Physical change: states of a system transition into one another.
- Relational duration: processes are compared by means of a measure.
- Experienced time: the subject connects changes with memory, the present, and expectation.
- Time as a resource: the subject allocates irreversible duration among goals and actions.
These levels are related but not identical.
In Relation to Reality
Without referring to a subject, one can describe processes, the order of events, causal relations, and stable relationships between clocks and changes. This gives an objective or intersubjectively verifiable description.
But it does not yet follow that time exists as a separate substance. It may be more fundamental to speak of changes and the relations between them.
In Relation to the Subject
The subject adds their own perspective: “this has already happened,” “this is happening to me,” “this could still happen.” The subject integrates events into the present, holds memories, and relates the future to possible action.
Only here do expressions emerge such as:
- “I spent time”;
- “I lost a year”;
- “I didn’t have enough time”;
- “I devoted my life to this.”
These assertions are not merely clock readings. They express the subject’s relation to their own possibility of becoming.
A Carefully Qualified Formula
An excessively strong conclusion:
without a subject, time does not exist at all.
A more precise conclusion:
Without a subject, there is no time as experienced, appropriated, and resource-like duration; the question of time as an objective structure must be distinguished from this assertion.
Summary Scheme
change
→ relation between processes
→ measurable duration
→ experienced sequence
→ choice among alternatives
→ time as a resource
→ result and a new situation
This distinction makes it possible both to preserve the reality of physical processes and to show that human time is not exhausted by the readings of clocks.
