Introducing complex predicates like 'E(x) ∧ S(x)' as propositional constituents merely relocates the problem of sense-individuation rather than dissolving it, since those predicates themselves require distinct Sinne to differ.

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E(x) ∧ S(x)(in formal logic): Symbolic logic notation: 'E(x)' and 'S(x)' are placeholders for different properties that something might have, and '∧' means 'and,' so this represents something having both properties at once.
Predicates(in logic and philosophy of language): Words or phrases that describe properties or characteristics of something—like 'is red' or 'is tall' in the sentence 'The ball is red.'
Sense-individuation(in philosophy of language and meaning): The process of figuring out what makes one meaning or concept distinct from another—how we tell similar ideas apart.
Sinne(in philosophy of language and reference): A German word (plural of 'Sinn') meaning 'senses' or 'meanings'—referring to the specific way something is understood or presented, developed by philosopher Gottlob Frege.

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