 Functional roles theories divide into two categories: molecular and holist. Molecular theories isolate privileged canonical relations that a symbol bears to other symbols. Canonical relations individuate the symbol, but non-canonical relations do not. For example, one might individuate Mentalese conjunction solely through the introduction and elimination rules governing conjunction while ignoring any other computational rules. If we say that a symbol’s “canonical functional role” is constituted by its canonical relations to other symbols, then we can offer the following theory: