Reflections on Time, Perception, and Existence

When I was young, time seemed to stretch endlessly. Waiting—whether for school to end, for playtime to begin, or simply to grow older—felt like an eternity. Every moment was vivid, filled with anticipation and curiosity. And yet, when immersed in play or joy, time felt boundless, as though those moments could last forever.

Now, at the late age decades of my life feel like the blink of an eye, a fleeting flash in the vast expanse of existence. Days, months, and years pass with astonishing speed, slipping through my grasp before I fully register them. This stark contrast in how I have experienced time across my life has led me to reflect deeply on its nature.

Drawing from philosophy and clinical psychology training and professional practice as a psychologist, and my life experiences with recent explorations into popular science, particularly quantum physics, I have come to accept that time is profoundly relative. Einstein’s theories of relativity revolutionized our understanding of time, demonstrating that it is not an absolute, fixed entity but instead depends on movement and perspective. His famous thought experiment involving identical twins offers a compelling illustration: if one twin travels through space at near-light speed while the other remains on Earth, the traveling twin would return younger, having experienced time more slowly relative to the twin on Earth. This phenomenon is not just theoretical; it is a measurable aspect of our universe.

Beyond the grand scale of relativity, I have also considered how biology shapes our perception of time. When we are young, our metabolic rate is faster. This heightened internal rhythm correlates with a slower perception of time—each moment feels rich and expansive. As we age and our metabolism slows, our perception of time accelerates; days feel shorter, years slip by faster, and life, in retrospect, compresses into a series of fleeting memories.

This interplay between biology and perception raises a profound question: Could all living organisms, regardless of their lifespan, experience time similarly? A fruit fly, for example, may live for mere days, while humans typically live for decades. Yet, due to its accelerated metabolic rate, a fruit fly’s perception of those days might feel as lengthy and meaningful as a human’s perception of 80 years. If we frame time as something experienced rather than objectively measured, then the brevity of a fly’s life and the longevity of a human’s might, in some sense, be equivalent in subjective experience.

In this way, time is not just a physical dimension governed by relativity; it is also a deeply personal, biological, and psychological construct. The perception of time arises from a confluence of factors: the external, such as movement and the passage of events, and the internal, such as our biological rhythms and mental states.

As I reflect on my eighty-five plus years of life, I see it not just as a journey through a timeline but as a mosaic of experiences shaped by this dynamic interplay of physics and biology. The young perceive time as expansive because their world is new, their curiosity boundless, and their internal rhythms quickened. The old perceive time as fleeting because their world has grown familiar, their moments are cherished in hindsight, and their internal clocks tick slower. Time is both a universal and deeply personal paradox that binds us all, regardless of how long we live or how we perceive the passing days. It is a reminder to treasure the fleeting moments we have, knowing that in some profound way, they may be infinite in their significance.

Acknowledgments: This writing is inspired by a lifetime of learning and reflection, enriched by my professional experiences in psychology, and early graduate training in philosophy, and influenced by the insights of great thinkers in philosophy and science as well as recent reading of popular science books. I was aided in the editorial process with AI.

Copyright: © [ 2025] [Mohiuddin Ahmed, Ph.D.]. All rights reserved. This document or any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of the author, except for the use of brief quotations in critical reviews or scholarly work.

Artificial Intelligence (AI) is ushering in a new era of possibilities in theoretical physics, bridging domains once thought separate—metaphysics, mathematics, medical science, and technology

This exciting interplay reveals connections that transcend traditional boundaries. For instance, quantum entanglement, a phenomenon that earned two physicists the Nobel Prize, offers intriguing insights into spiritual connectivity. Could this groundbreaking science hint at a deeper unity, a universal bond connecting all beings, both living and deceased?

Consider this parallel: just as genetic analysis of ancient teeth can reveal the diet of creatures from millions of years ago, or how genetic markers preserve traces of illnesses experienced by a human being, one might imagine that the entire memory of the cosmos—from the Big Bang onward—is imprinted within each of us.

This idea isn’t entirely new. Plato theorized that all knowledge exists within us, waiting to be discovered as “Ideas” in the mind. Similarly, religious and spiritual traditions often speak of an omniscient God who holds perfect knowledge of the past, present, and future. Even Einstein, in a letter to the widow of his close friend Michele Besso, remarked, “For us physicists, the distinction between past, present, and future is only an illusion, however persistent it may be.”

This convergence of science, spirituality, and philosophy challenges us to rethink our understanding of reality. Could it be that modern physics is revealing truths that spiritual traditions and speculative philosophy have long intuited? By examining these connections, we may find ourselves on the brink of a profound synthesis unified understanding of existence that embraces both the material and the metaphysical.

Please note, I was aided in the editing process of this write-up with AI. Below  is my original thoughts that I wrote compared to AI version posted above

“AI is opening exciting possibilities in theoretical physics, blending metaphysics- a branch speculative philosophy, with math, and medical science technology …with quantum entanglements for which the two physicists got their Nobel Prize, one can find support for spiritual connectivity for All dead or alive!!! Just like one can figure out through genetic analysis of teeth what the animal ate millions of years ago, and genetic markers are present from all the illnesses from past that a particular human being experienced, one can assume entire cosmic memory from Big Bang is imprinted in all of us! Plato theorized all knowledge discovering Ideas in mind… religious and spiritual people believe God knows all there is to know; past, present, and future… Einstein wrote to his dearest friend, Besso’s wife, “ …in physics, there is no past, present, and future…This is the convergence of science and religious spiritual beliefs and philosophical thinking I am trying to highlight!”

Reflections on the convergence of science with religious and spiritual beliefs


The convergence of science with religious and spiritual belief explores a profound and timeless theme: the unity of all existence and the cyclical nature of the universe, intertwined with the human quest to understand the divine.

The idea that everything in the natural, living, and cosmic world came from a “Point of Singularity” through the Big Bang is widely accepted in cosmology. It suggests a common origin for all matter, energy, and time. The notion that the universe could return to this singularity through the “Big Crunch” or other theoretical endpoints—whether it be through eventual collapse or other models like the Big Freeze or Heat Death—implies that the universe operates through a cycle of creation, transformation, and potential renewal. This cyclical nature of the universe, proposed by some cosmological models, mirrors certain religious or spiritual beliefs of eternal cycles—creation, dissolution, and recreation.

This comparison of this cosmological process to the mathematical principle that a whole can be divided into infinite parts further deepens the parallel. Just as mathematics breaks down a singular entity into multiple components to reflect the various phenomena we observe, the universe—beginning from one point—branches out into the multiplicity of the physical, biological, and conscious world we experience. Mathematics serves as a tool to comprehend the vast complexity of reality, yet it still depends on a unity, a fundamental “One.” This is akin to the spiritual concept that the universe, in all its diversity, emanates from a singular source, which many spiritual traditions identify as God or a universal consciousness.

This brings us to the crux of my reflection: the relationship between the scientific understanding of the universe and the underlying belief in a single, transcendent spiritual entity. Many religious faiths hold that God is the origin of all existence and that all will return to God. This concept of oneness in religious belief dovetails with the scientific notion of singularity at the beginning of time. The belief that everything is interconnected and originates from a single source—whether it’s framed scientifically as the singularity or religiously as the divine Creator—suggests a profound unity underlying all existence.

In spiritual belief systems, such as those found in Christianity, Islam, Judaism, and others, there is often the notion of returning to God or a divine source after death or at the end of time. This echoes the scientific hypothesis of a universe returning to its origin point in some models of cosmic evolution. From a religious perspective, human life is seen as a journey from unity with the Creator at birth, through a fragmented existence in the material world, and back to unity after death. This process of returning to the source mirrors the cyclical understanding of the universe in science: an ebb and flow between oneness and multiplicity, between origin and return.

Furthermore, the present advancement in quantum computing, whereby standard computing based on Boolean logic of placement of a given event as either 0 or 1 as a binary choice in algorithms is expanded with the possibility of a reality in which an event can exist simultaneously as both 0 and 1, offers a glimpse into a reality that transcends classical limits. Quantum computing, in essence, challenges our traditional understanding of logic and reality, suggesting that in a multiverse or quantum world, events could happen in parallel, where the same entity may be both alive and dead at the same time, akin to Schrödinger’s famous thought experiment. This speculative multiverse model, where different realities of the past, present, and future can co-exist, resonates with the religious belief of an All-knowing God who is omniscient, understanding past, present, and future all at once. This convergence of quantum theory and religious belief reflects a shared fascination with the infinite and the possibility that reality itself is far more complex and interconnected than we can currently grasp.

The convergence between science and faith, then, lies in the shared vision of an all-encompassing unity. Science seeks to explain the mechanisms by which the universe operates, revealing the intricate laws of physics, mathematics, and biology that govern existence. Religious belief, on the other hand, often seeks to explain the “why” behind existence, pointing to a divine purpose or higher power that transcends human understanding. Yet both approaches ultimately point to a fundamental unity—the “One” from which all things come and to which all things return.

The human mind, whether through the lens of science or spirituality, has an innate desire to seek unity in diversity, to find order in complexity, and to connect the many parts of existence to a greater whole. Whether through mathematical equations that describe the universe or spiritual practices that seek communion with the divine, humanity strives to understand its place in the vast, interconnected web of existence. The belief in One God or spiritual entity aligns with the scientific understanding that everything we observe stems from a single source and follows universal laws, suggesting that the divine and the scientific are not in conflict, but rather are different expressions of the same truth.

In sum, this reflection highlights the convergence between science and spirituality in their shared recognition of a unified source of all existence. The cyclical nature of the universe, as explored through the Big Bang and potential Big Crunch, parallels spiritual beliefs about the origin and return to God. Mathematics, as a tool for breaking down and understanding the infinite complexity of the universe, serves as a bridge between the finite human mind and the infinite reality it seeks to comprehend. The emergence of quantum computing, with its expanded understanding of reality beyond binary states, adds a layer of complexity that dovetails with religious beliefs in an omniscient, all-knowing God. Together, science and spirituality offer complementary ways of understanding the profound unity of all things, affirming that from One we all came, and to One we will return.

Please note that I was aided by Artificial Intelligence ChatGPT in the editing of my original writing that I submitted, but basic thoughts reflections stated are mine expressed more articulately by AI assistance!

Please also note, this is one of. series of blog postings by Mohiuddin Ahmed, under the blog title of Existentialperspectives.wordpress.com, created in 2014. Any unauthorized use and/or duplication of this material without express and written permission from this blog’s author is prohibited. Excerpts and links can be used provided full and clear credit is given to Mohiuddin Ahmed and citing his blog posting https://existentialperspectives.com with appropriate and specific direction to the original content