Putting it all together, then, the analysis of (8) indicates that its underlying syntactic representation does not respect the two main desiderata a language of thought must meet: content representation and content differentiation.
The Language of Thought. Cambridge, MA: Harvard University Press.
"Regress Arguments against the Language of Thought," Analysis 57(1): 60-66.
WLT must be clearly distinguished from a much stronger version, which I shall call the strong language of thought hypothesis (WLT):
(3) Therefore, we have to postulate a language of thought.
The language of thought hypothesis requires more than representation with constituent structure; it requires representations with logical or sentential structure.
The Language of Thought. If we accept the indexing model and the resultant distinction between psychosemantics and psychotectonics, the (strong) language of thought hypothesis (SLT) can be seen as based on a confusion of these two types of theoretical enquiry.
However, what believe should be rejected is the sort of a priori demand for alignment of projects represented in the language of thought hypothesis.