What counts as evidence for existence of a phonologically null element?

asked 2015-08-11 20:10:20 -0400

Romanov gravatar image

A semanticist's question: Suppose you posit a phonologically null element and its existence is disputed. Is it good evidence for its existence that this element can always be pronounced if stressed? Is it conclusive evidence? Is there any kind of conclusive evidence? If not, what counts as good evidence? Can anyone give me sources for citation?

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