The 4th Dimension: Walking Through Different Depths of Time
We all inhabit the same four-dimensional spacetime. Every one of us is pushed toward the future second by second, ticking along in unison with the second hand, and no single person is an exception before the laws of physics. Yet when we look closely at life, a strange question arises: Why does one person’s life feel like a grand narrative seamlessly connecting the past, present, and future, while another’s appears to be merely a sequence of isolated, short scenes of "right now"? Though our physical dimension remains identical, the depth of time we weave within our own consciousness varies immensely from person to person.
The Territory Drawn by the Mind: Differences in the "Time Horizon"
Psychology and neuroscience explain a person’s ability to look far into the future and reach deeply into the past within their consciousness through the concept of the "Time Horizon." Those with a broad time horizon bring their lives 5 or 10 years down the road—or even the world after they are gone—into the present to make today’s choices. For them, the axis of time is like a three-dimensional map that can be stretched and explored at will. Conversely, for those whose time horizon is bound to "today" or "immediate feelings," time is strictly flat. This distinction shapes the very scale of the frame through which we view our lives.
Turning the Past into Assets and the Future into Milestones
The ability to read patterns in past failures and perceive impending risks does not simply arrive with the passage of years. It requires a sophisticated mental tool known as "metacognition"—the ability to objectively observe one’s own thoughts. People with well-developed metacognition do not leave past memories as "emotions that suddenly overwhelm them." Instead, they use the past as stepping stones to evaluate the present and forge a safer path toward the coming future. In essence, they are densely setting up their own milestones along the axis of time.
Is Living Only in the Present a Three-Dimensional Life?
If so, is someone who lives solely focused on current stimuli and emotions living a three-dimensional life detached from the four-dimensional world? Rather than a limitation, it is closer to a form of "choice" and "focus." Metaphorically speaking, it is a life that pours all of its energy into a single, narrow, intense dot called "the present" on the vast canvas of four-dimensional spacetime. Without being tethered by past regrets or consumed by future anxieties, it maximizes the density of the moment—the "here and now." This closely resembles the pure form of existence that Zen philosophy or meditation strives to reach.
Completing Dimensional Narratives at One’s Own Tempo
Ultimately, it is not a matter of which way of living is superior. The ability to gaze far down time and prepare for the future offers stability and sense of direction, yet it can occasionally trap us within the anxieties of tomorrow. On the other hand, a life that fully savors only the present brings momentary vividness, though it makes avoiding repeated mistakes difficult.
We all stand on the same four-dimensional stage, yet we draw entirely different pictures with the brush of time held in our hands. Some stretch time long to map out a grand blueprint, while others press down hard to leave a deep, vivid mark on the single dot of this very moment. In their own distinct ways, every one of these lives fully proves its existence within the four-dimensional world.
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