Final answer:
This question pertains to Bertrand Russell's critique of Meinongianism and its treatment of existence as a property, aligning with Kant's position that existence is not a predicate. Russell's distinction between knowledge by acquaintance and propositional knowledge is also relevant to the discussion, as it highlights the mediation of sense data in our understanding of existence.
Step-by-step explanation:
The question revolves around Russell's critique of Meinongianism, which suggests that existence is a property and hence figures into the naive comprehension principle leading to a paradox of nonexistent entities like winged horses becoming existent just by their conceptual properties.
Russell's concern aligns with Immanuel Kant's criticism of the ontological argument that existence cannot be a predicate; thus, one cannot confer existence onto an entity merely by including it within the idea of that thing.
Meinongian objects revolve around the idea that there is an object for every property, including those that defy logical norms such as the nuclear/extranuclear distinction. However, this leads to contradictions similar to those found in Russell's paradox, suggesting that any theory of predication that tries to accommodate existence-like predicates will ultimately fail when extended beyond its initial order.
In epistemology, Russell's distinction between knowledge by acquaintance and propositional knowledge underscores our reliance on inference rather than direct awareness of external objects. This distinction is essential to understanding how we interpret sense data and infer substantive propositions about the external world.