Soru

Passage A
Traditional evolutionary taxonomy, heavily reliant on the subjective weighting of physical traits by established authorities, has long been plagued by irreproducible classifications. A taxonomist's "expert intuition" often dictated which morphological features were deemed significant, resulting in evolutionary trees that were more artistic interpretation than scientific artifact. In stark contrast, phylogenetic systematics, or cladistics, introduces an indispensable rigor by classifying organisms strictly according to common ancestry, mapped via shared derived characteristics (synapomorphies). Unlike phenetics, which groups organisms by overall morphological similarity—thereby frequently confounding homologous traits with analogously evolved ones—cladistics demands a strictly testable, branching hierarchy. A cladogram is not merely a descriptive diagram; it is a falsifiable hypothesis about evolutionary history that remains subject to revision upon the discovery of new data. By insisting that only monophyletic groups—comprising a true ancestor and all its descendants—be recognized, cladistics eliminates the arbitrary intuition that previously defined taxonomic ranks. This methodological shift is not merely a preference for precision; it is a fundamental epistemological prerequisite for rendering comparative biology a truly predictive, rigorously empirical discipline devoid of anthropocentric bias. To accept cladistics is to accept that biological classification must reflect evolutionary reality, independent of human convenience.

Passage B
The eventual triumph of cladistics over traditional evolutionary taxonomy in the late twentieth century is frequently narrated in scientific textbooks as the inevitable victory of objective logic over subjective tradition. However, this triumphant historiography obscures the profound sociological and technological contingencies that actually catalyzed the methodological shift. The cladistic revolution did not succeed solely on the strength of its philosophical rigor or empirical superiority. Rather, its ascendance was inextricably linked to the simultaneous proliferation of early computational technologies in university biology departments during the 1970s and 1980s. The binary, combinatorial logic of cladistics—where morphological and later genetic traits are rigorously coded as either ancestral or derived—was perfectly suited to algorithmic processing. Conversely, the intuitive, holistic weighting favored by traditional taxonomy inherently resisted computerization. Furthermore, the rapid institutional adoption of cladistics was propelled by a profound generational schism within the academy. Younger systematists leveraged the intense computational demands of phylogenetic analysis to establish a new, aggressively quantitative metric of professional expertise, thereby deliberately marginalizing the older generation of taxonomists who relied on decades of qualitative field experience. Thus, the paradigm shifted not just because the new method was logically unassailable, but because it neatly aligned with the computational zeitgeist and served as a potent vehicle for professional advancement. Understanding this transition requires looking beyond the phylogenetic trees themselves and examining the institutional architectures that allowed them to take root.

Which one of the following most accurately describes the relationship between the two passages?