Quantum Computing Is a Lie (Here’s What I Discovered)

Overview

An ex–Big Tech software engineer recounts a personal “misadventure” with quantum computing after attending an internal company conference where the firm showcased a state-of-the-art quantum computer and offered employees cloud credits to experiment with it.

Main claims and observations

Quantum computing’s big promise vs. real-world usefulness

• The theoretical advantage

  • Quantum computers can, in principle, represent many possibilities using qubits and superposition.
  • In idealized cases, they may compute certain outcomes far faster than classical computers.
  • The narrator uses a simplified example (about summing bits) to illustrate how an “instant” advantage could matter for problems whose computational cost grows massively for classical methods.

• Why practical results may not become usable information

  • He argues that most practical quantum results don’t translate into actionable information because measurement collapses the qubits to a single random outcome.
  • In his view, useful value often requires extracting the full set of relevant information, not just one sampled result.

• An “algorithmic deficit”

  • After decades of research, he claims there are only a small number of quantum algorithms that are broadly compelling.
  • He specifically cites:
    • Shor’s algorithm for factoring
    • Grover’s algorithm for speeding up search
  • For many real-world problems, he implies there is still no reliable quantum approach that clearly outperforms classical methods.

• Why this hasn’t become the next major industry

  • He frames this as a key reason quantum computing hasn’t yet become the “next trillion-dollar industry.”

How qubits feel “weird,” and why that doesn’t automatically make the tech practical

• Superposition as unsettling intuition

  • He describes superposition as qubits holding multiple possibilities “everywhere and nowhere” until measurement.
  • He uses a coin-spinning analogy to communicate the idea that the system isn’t settled on a single outcome prior to observation.

• Connecting the weirdness to broader physics

  • He links this strangeness to wider claims that similar “fuzzy” behavior appears at the particle level in physics.

Entanglement and distance

• Entanglement as correlated outcomes

  • He explains entanglement with two particles whose spins become correlated.
  • Measuring one seems to “instantly” determine the other.

• Speculative implications for distance and reality

  • He suggests—rhetorically—that this challenges intuition about distance.
  • He briefly entertains mind-bending interpretations (e.g., notions of “no distance” or extreme implications about reality), while not presenting them as confirmed facts.

Highly speculative implications (cause and effect, free will, and cosmology)

• A cause-and-effect anomaly

  • He mentions an anecdote involving research that “accidentally” suggested an ability to affect a qubit’s past state.
  • He frames this as contradicting cause and effect and uses it to raise questions about free will.

• Reality-adjacent speculation

  • He becomes absorbed in speculative frameworks, including:
    • the universe being inside a black hole with “layered” universes
    • the universe possibly being a simulation

• Personal impact

  • He concludes that the mental rabbit hole became overwhelming enough to disrupt his sleep.

Overall conclusion

The video’s thesis is that quantum computing may be miraculous in theory but limited in practice, primarily due to measurement collapse and a lack of broadly useful quantum algorithms. The narrator’s personal takeaway expands into broader reflections on how quantum weirdness can destabilize one’s sense of reality—ending the “journey” when his cloud credits run out and the topic overtakes his life.

Presenters / contributors

• Presenter/Narrator: Unnamed “unemployed ex big tech software engineer” (speaker throughout).