Question

Historians of science have long categorized Arthur Eddington’s 1926 treatise *The Internal Constitution of the Stars* as an unassailable triumph of theoretical astrophysics that rendered earlier, purely observational stellar classification systems obsolete. Yet a closer examination of Eddington’s methodology reveals a far more ambivalent relationship with his predecessors’ empirical frameworks. Far from summarily discarding the empirical cataloging of stellar spectra compiled by Pickering and Cannon at Harvard, Eddington relied upon their spectral typologies as indispensable empirical anchors, even while attempting to reframe their descriptive classifications within a thermodynamic model. However, Eddington’s underlying stance toward the Harvard system was not one of unreserved synthesis; rather, he maintained a calculated distance from their reliance on purely morphological taxonomies, arguing that without a mechanism grounded in radiation pressure and nuclear energy, empirical classification risked degenerating into mere superficial bookkeeping. Conversely, Eddington's reluctance to fully endorse the burgeoning quantum mechanical models of atomic spectra advanced by Niels Bohr—models that would ultimately provide the physical mechanism Eddington himself lacked—underscores the paradoxical boundaries of his theoretical vision. Thus, Eddington’s posture toward the observational traditions of his era is best understood not as radical iconoclasm or seamless integration, but as a circumscribed reliance coupled with a principled, if incomplete, theoretical critique.

Based on the passage, which of the following statements accurately characterize the author's assessment of Eddington's attitude toward the empirical stellar classification systems of his predecessors?