Quantum Computation: An Analytical Rebuttal

Quantum computing is widely portrayed as a revolutionary technological paradigm, promising exponential speedups and unprecedented computational capabilities through the manipulation of quantum superposition, entanglementandinterference. This paper presents a com-prehensive and interdisciplinary refutation of such claims, demonstrating that the prevailing narrative is mathematically incoherent, physically implausible, economically irrationalandpolitically constructed. Beginning with a rigorous critique of the misinterpretation of quantum states as parallel classical processes, we show that superposition and entanglement do not provide the kind of computational multiplicity often claimed. We examine the hard limits imposed by decoherence, errorcorrectionoverheadandthermodynamic constraints, revealing that scalable, fault-tolerant quantum computation remains physically infeasible under any realistic engineering regime. We further demonstrate that quantum computing introduces no newclass of computable functions and remains firmly within the boundaries of the Church–Turing thesis. Economically, we analyse the high costs and narrow applicability of proposed quantum advantages, concluding that even where theoretical speedups exist, the resource overhead renders them impractical. Finally, we dissect the political economy of quantum computing as a form of security theatre, wherein opaque scientific discourse is exploited to secure funding, generate institutional rentsandsustain a techno-political myth. This paper reasserts the necessity of epistemic rigour, economic rationalityandphysical realism in evaluating emerging technologiesandargues that the current trajectory of quantum computing investment constitutes a paradigmatic case of institutionalised overpromise.