The Subjective Experience of Time: A Four-Component Framework

We usually think of time as something external - a universal clock ticking independently of us. Seconds pass, minutes accumulate, and the universe unfolds regardless of whether we pay attention to it or not. But what if experienced time is not something that flows around you, but something your system actively constructs? What if time, as you experience it, is not fundamental - but emergent?

Where This Began? 

This hypothesis didn't start with physics or philosophy. It started at a party. I met someone, had a conversation I clearly remembered afterward - the exchange, the ideas, the connection. But when I encountered that person again after few months, they had no memory of it at all. For them, that interaction simply did not exist.

The event had physically happened. Entropy had unfolded. Time had passed for both of us equally. Yet it existed in my timeline and not in theirs.

That asymmetry made me think about the very nature of subjective experience of time. If time were simply a physical flow - the same for both observers, then how could the same event exist in one person's past and be entirely absent from another's?

The answer, I gradually realised, was that experienced time isn't just about what happens. It's about what gets registered, preserved, and integrated. The physical event occurred. But without accessible information, it couldn't be reconstructed into an experienced timeline. That single observation opened into the framework that follows.

The Construction of Experienced Time: 

From observation and reflection, it seems that the experience of time requires the interaction of four fundamental components:

1. Entropy (Change) 

The physical world must be evolving. Events must unfold. Energy must disperse. Systems must transition from one state to another. Without change, there is no sequence — and without sequence, there is nothing to experience as "before" and "after." Entropy provides the direction and progression of events.

II. Information (Trace)

Change alone is not enough. For an event to exist in your experienced timeline, it must leave a trace - in memory, in physical systems, or in some form of record. Without accessible information, an event cannot be reconstructed.

This leads to an important realization: 

"An event that leaves no accessible information does not exist in a system's experienced timeline, even if it occurred physically."

This is precisely what the party conversation revealed. The event was real. The entropy was identical for both people present. But one system retained the information and the other did not - and so the same moment exists in one experienced past and is entirely absent from another. Your memory is not just recalling the past - it is constructing your past.

III. Degrees of Freedom (Richness of Experience) 

Even with change and memory, time does not feel the same in all situations. Sometimes an hour feels like minutes. Sometimes a moment feels extended. The difference lies in the degrees of freedom available to your system. Degrees of freedom here refer to how many dimensions your mind can unfold information into:

• Sensory
• Emotional
• Cognitive
• Imaginative

The more dimensions involved, the richer the experience. 

'More degrees of freedom → richer unfolding → expanded sense of time.' 

'Fewer degrees of freedom → restricted unfolding → compressed time.'

This is why:

• Deep conversations feel longer than passive waiting.
• Engaging experiences feel dense and vivid.
• Repetitive routines collapse into blur.
• Deep sleep feels like no time at all.

In deep sleep, the brain still functions, but the 'effective degrees of freedom for conscious integration drop drastically'. As a result, hours pass without being experienced.

IV. Relational Registration (Interaction) 

Finally, your system must be able to interact with and register changes in the environment. It is not enough for the world around you to change, those changes must be detectable and integrated. If a system cannot register change, it cannot construct time. 

Consider a person in a coma. The world around them continues changing - entropy unfolds, people speak, time passes physically. Yet they register none of it. When they emerge, there is no experienced gap - not darkness, not waiting, simply nothing. The hours or weeks collapse into a single discontinuity, because without relational registration, no experienced time could be constructed at all.

A photon presents an even more fundamental case. It has no frame in which it can register change because the speed at which it travels, it cannot perceive any entropy change in its surrounding system or its path as the entropy change involves particles and particles with mass cannot move faster than the photon. so no meaningful subjective duration can be defined for it. Its entire journey across the universe - from emission to absorption - is instantaneous from its own perspective. Not because time moves differently in the relativistic sense alone, but because the very conditions necessary for experienced time are completely absent.

The party conversation illustrates this factor too, in a subtler way. Two people were present. The same environmental changes unfolded around both, the conversation presented both people with the same information. But one system was more fully open to registering and integrating that particular interaction - and so it entered one experienced timeline and not the other. Registration is not just binary. It operates in degrees.

Time, therefore, is not just about events happening - it is about events being registered.

The Core Insight

From these four components, a picture emerges: 

Experienced time is not a fundamental flow, but an emergent construct arising from change, information, internal capacity, and interaction. 

It is built, moment by moment.

A Simpler Way to See It

Time is not a river carrying you forward. It is something your system constructs from:

1. The world changing (entropy)
2. The traces those changes leave (information)
3. The richness of your internal state (degrees of freedom)
4. Your ability to register those changes (interaction) 

Remove any one of these, and the experience of time begins to break down.

Implication

This leads to a deeper, more personal implication. If the experience of time depends on the 'degrees of freedom' and 'registration of reality', then:

'The richness of your life is not determined by how much time passes, but by how much of it you are actually able to experience.'

Two people can live the same number of years, but inhabit completely different amounts of lived time.

The person at that party who forgot our conversation didn't lose time. They simply never constructed it. The hours existed physically. But without registration and preserved information, those moments never became part of their lived experience. That is not a tragedy. It is a reminder.

Final Thought

Time is not something that simply happens to you. It is something you participate in constructing. And the more fully you engage with the world - the more dimensions you bring into each moment, the more openly you register what is happening around you - the more time, in a very real sense, you actually live.

                                                                                                                                                               ~ Nagarjuna Reddy W