Abstract
Standard cosmology defines the singularity as the absolute cosmic origin where all matter, energy and spacetime originate. This paper conducts rigorous methodological examination on this assertion in three dimensions. First, it points out conceptual confusion: singularity theorems only verify geodesic incompleteness, yet mainstream theories wrongly regard this mathematical boundary as the ultimate physical origin. Second, it exposes the evasion of causal interpretation. Though recognized as the cosmic starting point, the singularity fails to explain material sources, trigger mechanisms and temporal origins, simplifying core puzzles into mere initial conditions. Third, it reveals logical inconsistency: physics takes the singularity as a practical computational starting point in cosmic evolution research, while dismissing it as merely a theoretical failure limit in philosophical debates. Moreover, mainstream quantum gravity theories all tend to eliminate singularity settings. This paper concludes that standard cosmology must stick to logical consistency: either deny the singularity as a valid cosmic origin, or fully fulfill its causal explanatory obligations. It cannot hold two contradictory viewpoints simultaneously.



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