In this essay I argue that adequate sense can be made of ceteris paribus conditions. More recently, Peter Mott has attempted to show that Fodor's response to Schiffer fails, and furthermore that further study shows that the logical framework in which Schiffer and Fodor address their issue is susceptible to inconsistency. arguments, in defense of special science laws.
Schiffer argues that adequate sense cannot be made of ceteris paribus clauses, while Fodor attempts to overcome Schiffer's. In this essay I enter into a recently published debate between Stephen Schiffer and Jerry Fodor concerning whether adequate sense can be made of the ceteris paribus conditions in special science laws, much of their focus being on the case of putative psychological laws. The predicted density is Omega(0) approximately 1.013 > 1, and the model also predicts temperature correlations in matching circles on the sky. Here we present a simple geometrical model of a finite space-the Poincaré dodecahedral space-which accounts for WMAP's observations with no fine-tuning required. The observed lack of temperature correlations on scales beyond 60 degrees means that the broadest waves are missing, perhaps because space itself is not big enough to support them.
In an infinite flat space, waves from the Big Bang would fill the universe on all length scales. One natural approach questions the underlying geometry of space-namely, its curvature and topology. Temperature correlations across the microwave sky match expectations on angular scales narrower than 60 degrees but, contrary to predictions, vanish on scales wider than 60 degrees. First-year data from the Wilkinson Microwave Anisotropy Probe (WMAP) confirm this model to spectacular precision on all but the largest scales. The current 'standard model' of cosmology posits an infinite flat universe forever expanding under the pressure of dark energy.
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