List of Appendices

Appendix A: Overly Optimistic Claims

A chronological table of public quantum computing claims from 2007–2023 — including promises from D-Wave, Google, IBM, IonQ, and McKinsey — compared against what actually happened. The pattern of missed timelines and undelivered breakthroughs speaks for itself.

Appendix B: Breakthroughs Required

The ten simultaneous physics and engineering breakthroughs that must all occur on the same platform for quantum computing to become economically viable. Error rates, qubit counts, coherence times, connectivity, cryogenics, control electronics, error correction overhead, practical algorithms, cost competitiveness — and all of them at once.

Google Quantum Echoes Paper Analysis

A detailed review of Google Quantum AI's 2025 Nature paper on quantum echoes using the Willow processor. The paper demonstrates a legitimate 13,000x speedup on a specific physics measurement task (OTOCs), but the computation has no commercial relevance. Rated 7/10 for solid incremental science with inflated framing.

Palmer's Rational Quantum Mechanics

An analysis of Tim Palmer's 2026 PNAS paper proposing that quantum computers face a fundamental ceiling of 200–1,000 qubits due to the discretization of Hilbert space. If correct, Shor's algorithm can never break RSA encryption — not for engineering reasons, but because of physics. Rated 6/10 for an intellectually serious, falsifiable theory that remains speculative and unproven.

Community Reaction to Palmer's Rational Quantum Mechanics

How the quantum computing, quantum foundations, and cryptography communities responded to Palmer's March 2026 PNAS paper. Covers Scott Aaronson's public response, mainstream skepticism, the hardware timing problem, and alarm from post-quantum cryptographers about the paper being misused to argue against migration urgency.

Microsoft's Majorana 2 Claims: Nature Critique Analysis

A detailed review of Dr. Henry Legg's June 2026 Nature "Matters Arising" critique challenging Microsoft's topological qubit paper. Legg identifies basic Python coding errors, a flawed measurement protocol with arbitrary outcomes, and omitted data that resembles noise rather than the claimed Majorana state. This is the third serious public challenge to Microsoft Majorana research after retractions in 2018 and 2021. Rated 9/10 for a technically specific, verifiable critique — and a textbook case of institutional confirmation bias and sunk cost reasoning.

Hagar's "The NISQ Trap"

An analysis of Amit Hagar's 2026 paper arguing that nearly every NISQ-era "quantum advantage" claim has been classically reproduced within eighteen months, and that this follows a structural pattern rather than coincidence. Covers the paper's six supporting theoretical results, its distinction between hardware demonstration and computational advantage, and Scott Aaronson's specific rebuttal. Rated 7/10 for a well-sourced structural argument contested at the margins.