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Quiz: Economically Viable Quantum Computing

Test your understanding of a technology that operates at negative 273 degrees Celsius and has been five years away since 1994.

1. A technology fantasy, as defined in this chapter, is which of the following?

  1. A technology that does not work in any setting
  2. A technology that works in laboratories but has not crossed the gap to economically viable deployment at scale
  3. A technology that exists only in science fiction novels
  4. A technology that has been debunked by peer review
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The correct answer is B. Unlike vaporware, which never worked, a technology fantasy is real — it works in laboratories, publishes papers, and wins awards. But it has not crossed from "demonstrated in controlled conditions" to "useful at scale for a price someone is willing to pay." The gap between lab and market is the space where technology fantasies live and press releases thrive.

Concept Tested: Technology Fantasy

2. A qubit differs from a classical bit because of which property?

  1. A qubit stores exactly twice the information of a classical bit
  2. A qubit can exist in a superposition of 0 and 1 simultaneously
  3. A qubit operates at room temperature while classical bits require cooling
  4. A qubit was invented by a medieval alchemist seeking to purify unicorn horn
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The correct answer is B. A qubit can be 0, 1, or both at the same time through the quantum mechanical property of superposition. This is "not a metaphor — it is a physical property of quantum systems that has been experimentally verified thousands of times and is still deeply unintuitive to anyone who lives in the macroscopic world, which is everyone."

Concept Tested: Quantum Computing

3. Google claimed quantum supremacy in 2019 by completing a calculation in 200 seconds. IBM disputed the claim by arguing that a classical computer could do it in how long?

  1. 200 seconds (identical performance)
  2. 2.5 days
  3. 10,000 years, as Google originally stated
  4. Five years, consistent with all other quantum computing timelines
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The correct answer is B. Google claimed the classical alternative would take 10,000 years. IBM said 2.5 days. The discrepancy between "10,000 years" and "2.5 days" is approximately four orders of magnitude, "which is either a rounding error or a fundamental disagreement about what 'supremacy' means." The debate revealed that quantum supremacy benchmarks are designed to showcase quantum computers, not to solve problems anyone needed solved.

Concept Tested: Quantum Supremacy

4. Five years away syndrome is best described as which of the following?

  1. A genuine prediction methodology used by researchers with strong track records
  2. The phenomenon by which a technology is perpetually predicted to become practical within five years, regardless of when the prediction is made
  3. An engineering milestone indicating a technology is close to deployment
  4. A regulatory timeline mandated by the Federal Technology Readiness Board
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The correct answer is B. Five years is the optimal prediction horizon: far enough away that the predictor cannot be immediately proven wrong, close enough to generate excitement and funding. Quantum computing has been "five to ten years" from commercial viability since 1994. The five-year horizon is not a forecast. It is a fundraising strategy. The chapter identifies the identical pattern in AGI timeline claims from Chapter 9.

Concept Tested: Five Years Away Syndrome

5. The fictional Dr. Elena Fictitious identifies what as the primary reason "this time is different" for quantum computing?

  1. A breakthrough in error correction algorithms
  2. New materials that allow room-temperature operation
  3. "Primarily, the press release is better"
  4. Increased investment from governments committed to quantum research
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The correct answer is C. When asked what would make this time different from the previous thirty years of "five years away" predictions, Dr. Fictitious paused and said: "Primarily, the press release is better." The quote — fictional but representative — captures the chapter's argument that quantum computing's timeline improvements have occurred primarily in marketing, not in engineering.

Concept Tested: Five Years Away Syndrome

6. Which of the following is NOT listed as a genuine challenge for economically viable quantum computing?

  1. Operating temperature near absolute zero requiring refrigeration larger than the computer
  2. Error rates too high for most practical applications
  3. Cost per useful qubit measured in millions of dollars
  4. Insufficient interest from venture capitalists and government funding agencies
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The correct answer is D. Quantum computing has attracted enormous investment — the problem is not insufficient interest but the gap between investment and deliverables. The actual challenges are physical: temperatures near absolute zero, error rates that prevent useful computation, costs per qubit in the millions, and fewer than a dozen demonstrated applications with advantage over classical computers. The market size consists "primarily of research grants and government contracts."

Concept Tested: Quantum Computing

7. The chapter pairs quantum computing with which mythical beast, and for what shared characteristic?

  1. The dragon — both destroy existing industries
  2. The unicorn — both are funded on belief and are not yet commercially viable
  3. The phoenix — both die and claim rebirth
  4. The siren — both sing a beautiful song that leads to rocks
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The correct answer is B. Quantum computing is paired with the unicorn because both share the defining characteristic: "everyone talks about them, venture capitalists fund them, and nobody has seen one work at scale." Both have been sighted under controlled conditions but not in the wild. Both attract enormous funding based on theoretical potential. Both have critics dismissed as "not understanding the science."

Concept Tested: Technology Fantasy

8. The quantum computing industry survives on the same fuel as the unicorn-industrial complex. What is that fuel?

  1. Renewable energy from solar and wind installations
  2. The gap between what could be true and what is true, filled with investor capital and press releases
  3. Genuine revenue from commercial quantum computing services
  4. Government mandates requiring quantum-ready infrastructure
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The correct answer is B. The technology is real. The physics is sound. The engineering challenges are enormous. And the five-year timeline is eternal. The industry survives on the gap between potential and reality, filled with capital and communications. Sparkle notes that "a technology whose primary deliverable is press releases about future deliverables is operating on the same business model as a unicorn sighting: the announcement IS the product."

Concept Tested: Five Years Away Syndrome

9. Quantum interference in quantum computing is the process by which what happens?

  1. Quantum computers interfere with nearby classical computers
  2. Correct answers are amplified and incorrect answers cancel out through probability manipulation
  3. Government regulations prevent quantum computers from being exported
  4. Entangled qubits communicate faster than the speed of light
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The correct answer is B. Quantum algorithms manipulate probabilities so that correct answers are amplified and incorrect answers cancel out — "not by checking every possibility, but by choreographing probabilities." This is the mechanism by which quantum computers could theoretically solve certain problems exponentially faster than classical computers. The "could theoretically" part is doing significant work in that sentence.

Concept Tested: Quantum Computing

10. Evaluate the following claim: "Quantum computing will break all current encryption within five years." Using the chapter's framework, which assessment is most accurate?

  1. Verified — multiple peer-reviewed studies confirm this timeline
  2. Plausible — the mathematics supports it, but current hardware is orders of magnitude short
  3. The claim follows the five years away pattern and should be treated as a fundraising strategy until independently verified
  4. Impossible — quantum computing cannot affect encryption under any circumstances
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The correct answer is C. Breaking RSA encryption would require millions of error-corrected qubits; the current best is approximately 1,000 noisy qubits. The mathematics (Shor's algorithm) supports the theoretical possibility. The engineering gap is enormous. And "within five years" is the signature timeline of five years away syndrome — a prediction horizon optimized for funding rather than accuracy, identical to the pattern since 1994.

Concept Tested: Five Years Away Syndrome