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The quantum realm, the cosmological realm, and the multiverse, in 69 minutes | Hakeem Oluseyi

Big Think | May 22, 2026



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The atom you learned about in school with electrons orbiting a nucleus like planets around a sun is a useful fiction. Astrophysicist Hakeem Oluseyi dismantles that picture entirely, replacing it with something far stranger.

What he unveils is a universe built not from particles, but from quantum fields that permeate all of spacetime, vibrating constantly, with no source, no origin, and no off switch.

You can find Hakeem’s new book, Why Do We Exist?, here: https://www.amazon.com/Why-Do-We-Exist-Universe/dp/1984819127 and his previous book, My Quantum Life, here: https://www.amazon.com/Quantum-Life-Unlikely-Journey-Street/dp/B08V6J5F9D

0:00 Chapter 1: The strange world of quantum physics
6:25 Why quantum math defies intuition
13:31 Entanglement, spacetime, and the deepest unsolved questions in physics
21:12 Chapter 2: The cosmological realm
26:38 You’re moving at the speed of light right now
46:00 The universe Is disappearing
52:08 Chapter 3: The two multiverses we might live in
1:00:51 The evidence for the multiverse
1:07:08 Why the equations deserve our trust

Read the video transcript ► https://bigthink.com/series/full-interview/multiverse-oluseyi/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description

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About Hakeem Oluseyi:

Hakeem Oluseyi is an astrophysicist, cosmologist, inventor, STEM educator, and science communicator known for his work in “hacking stars” to understand the universe. Oluseyi’s work has resulted in 11 patents and more than 100 publications covering contributions to astrophysics, cosmology, and plasma physics and the development of space missions, observatories, focal plane instruments, detectors, semiconductor manufacturing, and ion propulsion.

Written by Big Think

Comments

This post currently has 15 comments.

  1. @TheAlchemistZero1

    May 22, 2026 at 2:41 pm

    Finite Nature vs Infinite Nature:

    Everything naturally occurring is Nature, which includes plants, microorganisms, humans (all lifeforms), atoms, energy, stars, planets, black holes, cancer, AIDS, space, Dreams, and Consciousness. 

    (Why would Nature be finite?)

    Without Infinity, there is only infinite regress; E.g. String Theory: what caused the strings, where did the strings come from, what came before the strings; E.g. The Big Bang: what caused the initial singularity, what came before the initial singularity, etc. Considering "Nothingness" is an obvious fallacy, there must always be Something. 

    Prove Nothingness, while keeping in mind: Nothingness can only be "proven" in the absence of an observer. If described (observed) by an observer, Nothing becomes something (think hard about this). This would also connote a field of infinite Nothingness randomly formed a spec (our Universe) of somethingness – which is nonsensical.

    Provisional science cannot claim authority over reality, at best it can only provide fuzzy hints. Science is a game of "let’s pretend," played with symbols and sensors. Its power lies in utility, not truth. To mistake physics/maths for reality is to worship the finger pointing at the moon.

    Our cosmological sciences are akin to a microorganism residing within a human (on Earth), actively exploring the Andromeda galaxy. Our nearly insignificant signals bouncing off of fragments of Infinity – the margins for error are "astronomical".

    "So far as the theories of mathematics are about reality, they are not certain; and as far as they are certain, they do not refer to reality" – Albert Einstein

    Why would Nature form brains/minds to exhibit consciousness other than to experience reality; considering experiencing reality is the objective of consciousness?

    It connotes conscious intent, via consciousness (Nature).

    Consciousness/Experiences:

    Disneyland (Reality) – Patrons (Consciousness) = Nothingness = Fallacy.

    Instead, we Patrons (Nature) are the architects of our own theater called Reality.

    All life exists for the sake of experiences (regardless of good/bad).

    A thought experiment:

    On a plain sheet of paper, draw a single dot (.) in the very center.
     
    The paper represents infinite space. Everything beyond the boundaries of the sheet also represents endless (empty) space.

    The dot represents 'The Big Bang'.
    Everything humanity is aware of – exists within the dot (our currently expanding universe).

    If the observers of this singular dot, zoom far enough away – the dot will cease to exist. The dot will be extinguished through expansion/evaporation – wholly consumed by an infinite void (due to cosmic scales/distances). This would prohibit existence from 'being'. (Yet here we are).

    Furthermore this would connote The Big Bang occurred at random, within an infinite void of nothingness – suggesting 'somethingness from nothingness' – which is a fallacy.

    Without considering potential forces being exerted upon our reality/universe (from beyond the boundaries of our observations) – is an incomplete interpretation.

    Clearly the remainder of the sheet of paper cannot be an infinite void.

    The expansion of our universe is accelerating. If our cosmic expansion were occurring within a void, our reality would have concluded before it began (poof). (Yet here we are).

    If we are a facet of Infinity – we are Infinity. Along with everything being intimated.

    Instead imagine the sheet and everything beyond – riddled with infinite dots.
     
    Every universe is a particle, every particle is a universe.

    (Infinity is self-propagating).
               
    Thus Infinity is a superdeterministic preexisting condition.

    Infinity being absolute simultaneity.

    Expresses infinite probabilities – Deterministically.

    Every reality.

    Every life.

    Is an intended narrative.

    (The largest cannot exist without the smallest)

    Although our universe is finite (as evidenced by expansion).
     
    Infinity exists at a fixed maximal size, without borders/boundaries: Infinity is forever in every sense, within which infinite universes/realities are housed – each a distinct experience.

    (Infinity > Multi)

    Infinity accounts for every variation, including variations in thoughts.

    Reality is an infinite fractal consciousness; whereby all realities, every possibility, along with every imaginable and unimaginable thing, is a fragment of said consciousness – which we refer to as Nature. 

    We are Nature. 

    We are "God" (figurative); fragmented into infinite experiences. 

    An Infinity without borders or constraints; with infinite energy.

    We are all the same entity; existing for the sake of experiences. 

    Death Demystified'.

    In order to fully grasp the nature of Death; it is important that we understand Life.

    Reality is an infinite fractal consciousness; whereby all realities, every possibility, along with every imaginable and unimaginable thing, is a fragment of said consciousness – which we refer to as Nature.

    We are Nature.

    We are "God" (figurative); fragmented into infinite experiences.

    An Infinity without borders or constraints; with infinite energy…

    We are all the same entity; existing for the sake of experiences.

    Scenario:

    Individual A is hit by a car, witnesses B, C, and D are present.

    With the following occurring in simultaneity…

    Individual A(1) leaps up, unharmed – (it's a miracle), witnesses B(1), C(1), and D(1) disperse.

    Individual A(1) carries on with their life… (to be continued).

    Individual A(2) dies on impact, witnesses B(2), C(2), and D(2) recant the details.

    With both scenarios, factor the ensuing ramifications on everyone/everything involved, along with the subsequent entanglements (Butterfly Effect).  

    Through each Death endured, Individual A(1-♾) experiences (gradually increasing) fantastic shifts in their personal narrative. Eventually leading to divergent experiences (kidnapped by aliens). These fragmented experiences overlap with all local (Earth) conscious narratives.

    Once an extreme apex has been achieved, reality resets for individual A, a randomized narrative starts anew… Corporeal Birth (simplification).

    Why do some individuals miraculously survive extreme situations?

    Why are some humans living caricatures?

    The Meaning of Life:

    Imagine an endless clear glass tube (representative of Time), within which exists a diorama of life on Earth. The left most section depicting our earliest single-celled ancestors (3.5 billion years ago), leading through our present and into a future yet to be experienced (farthest right).

    Notice the tube (Time) and the diorama of life displayed within – exists Simultaneously; Past, Present, and Future all occurring concurrently. Every life form within the history of existence, an interconnected narrative: as 'Futures' cannot exist without Past events.

    Similarly to reading a book, we can only examine moments of our lives which had already transpired (Past), those pages yet read (Future) remain uncertain until experienced (no cosmic spoilers). We can only surmise possible outcomes based on prior events (pages read), although never guaranteeing accuracy of predicting Future events.

    Without the existence of Conscious experiences, there would be Nothingness. Life experiences, Experiences, simply for the sake of experiencing – which is why Life chronically craves varieties of stimuli.

    Our corporeal forms are assigned avatars, which allows Consciousness to experience material reality.

    Works of fiction (books, cinema, video games, etc.), allows individuals to experience an extended Consciousness, whereby our emotional states carry-over into fictional narratives (frustration, anger, joy, elation…). All of this, despite understanding such events are merely virtual (occurring within said individuals imaginations).

    Books are experienced in chronological order instead of a randomized order; in order to maintain a cohesive narrative flow.  Within fictional works, every character arc has their entire fate sealed; from inception to demise – luck/chance has already been decided throughout.

    This is also why every Life is experienced through a predetermined progression. Reality is a sensory experience, simply for the sake of experiencing a physical Life.

    Regarding Panpsychism: 

    Have you ever dreamed a contemporary dream, one within a major city, buzzing with people? Although the entire dream is constructed from your consciousness, not all objects within are imbued with conscious experiences – only the observable lifeforms are. The buildings, streets, signs, cars, and all inanimate things are purely decorative. Inanimate objects (minerals) provided by reality are not conscious. People attend plays to watch living artists perform, the stage and props are not the stars.

    Time: 

    A seemingly endless cadence of day/night cycles, conducted over the course of the Human epoch. Untold billions of Homo Sapiens Sapiens; generation after generation – conditioned by Nature to accept finality. The circadian rhythm, an innate mechanism, a constant reminder; consciousness an ephemeral experience, fleeting with every moment, through every exhalation. Selene a blanket of night, engulfing all into her dreamy embrace – the analog of Stella, raining rays of warmth, nourishing existence into being; beckoning the vivacity of life to stir yet again. 

    Day into night, night into day – a rhythm to remind us that none of Natures constructs are created without an expiry. Whether measured by 6.62607004 × 10-34 m2 kg / s; or by a Supereon, we are cascading energies, propagating our collective experiences – vainly attempting to elicit a sense of ‘self’ in hopes of staving off oblivion. Not realizing that the only allowable paradox to exist, is existence; a lucid dream conducted by the everlasting artistry of Gaia. 

    Time.

    the Alchemist 

    -Ø1

  2. @alex79suited

    May 22, 2026 at 2:41 pm

    You missed it, Hakeem. Keep trying you'll get there. Peace ✌️ 😎 from Canada, eh. EMFSYSTEMS theory. Potential VEM =0Msquared environment. By LA Berry.

  3. @ajg3768

    May 22, 2026 at 2:41 pm

    Why we exist?. Can’t understand past and future both of them could be same. We are leaving in moment of present (now). Moment of now is squished between past and future and has life time of plank.

  4. @raenico5285

    May 22, 2026 at 2:41 pm

    In literally every field of science and tech, there's one random Nigerian dude who's like an expert. Kinda crazy for such a poor country

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