Soru

The two passages below present contemporary theoretical perspectives on the measurement problem in quantum physics. Based on the arguments provided, classify each statement according to which passage (if any) provides explicit or implicit support for it.

Passage A
Theoretical physicists have long grappled with the "measurement problem" in quantum mechanics: why does a particle exist in a superposition of multiple possible states until measured, at which point it seemingly collapses into a single definite outcome? Early interpretations, notably certain subjective readings of the von Neumann-Wigner interpretation, inadvertently granted a privileged, almost mystical status to the conscious observer, suggesting that human cognition itself was the necessary catalyst for this wave-function collapse. Fortunately, the advent of environmental decoherence theory over the last few decades has largely obviated the need for such anthropocentric explanations. Decoherence mathematically demonstrates that any macroscopic system—be it a stray photon, an air molecule, or a mechanical measuring apparatus—interacting with an isolated quantum system causes the delicate superposition to 'leak' into the broader environment. This rapid, irreversible entanglement effectively scrambles the phase relationships and interference patterns that characterize quantum superposition, creating the practical illusion of a sudden, discontinuous collapse. Thus, the transition from quantum probability to classical certainty is not a singular event triggered by conscious awareness, but rather an inevitable thermodynamic process driven by unavoidable interactions. The environment itself acts as a relentless, omnipresent observer, rendering the subjective human mind entirely superfluous to the fundamental mechanics of physical reality.

Passage B
The orthodox Copenhagen interpretation of quantum mechanics has historically required physicists to accept an arbitrary demarcation—often termed the "Heisenberg cut"—between the microscopic quantum realm of probabilities and the macroscopic classical world of definite, observable outcomes. For decades, this epistemological cut was frequently, albeit sometimes implicitly, aligned with human observation, leading to highly uncomfortable philosophical implications regarding the indispensable role of human consciousness in actualizing physical reality. However, modern relational interpretations, most notably Relational Quantum Mechanics (RQM), argue compellingly that quantum states are not absolute, objective properties of an isolated system, but rather relational descriptions of the interaction between any two physical systems. In this egalitarian view, any physical entity—whether it is a simple photographic plate, a complex Geiger counter, or a conscious human being—can serve equivalently as an "observer." When a quantum system interacts with another system, its state becomes determinate solely relative to that specific interacting system, not to the universe as a whole. The cosmos is therefore reconceptualized as a vast network of physical interactions, where "reality" is inherently perspectival rather than global. Crucially, this robust framework democratizes the concept of physical observation. By establishing that all interactions are fundamentally quantum mechanical, RQM definitively dispels the notion that the human mind possesses some unique physical efficacy, replacing the mysterious, consciousness-induced collapse with a universally applicable physics of pure interaction.