Holders of "realism" argue that there is a deeper fact of the matter to both translation and belief attribution. In other words, manuals for translating one language into another cannot be set up in different yet behaviorally identical ways and ontologically there are intentional objects. Famously, Fodor has attempted to ground such realist claims about intentionality in a language of thought. Dennett comments on this issue, Fodor "attempt to make these irreducible realities acceptable to the physical sciences by grounding them (somehow) in the 'syntax' of a system of physically realized mental representations" (Dennett 1987, 345).