And yet, in the real world, people could use that sentence as part of a discussion without causing any confusion or ambiguity. Because sentences don’t exist on

And yet, in the real world, people could use that sentence as part of a discussion without causing any confusion or ambiguity. Because sentences don’t exist on their own, they have a wider context which can focus their meaning. Human language is succinct. We don’t generally say twenty words when ten would do. If the context made your example sentence clear, why would a speaker need to add any words to clarify it further?