This, of course, is not to deny the possibility of raising skeptical, theoretically grounded objections to such claims; on the contrary, it was the very impossibility of any theoretically satisfactory refutation of skepticism concerning the reality of freedom that led Fichte to affirm the inescapable "primacy of the practical" with respect to the selection of one's philosophical starting point.
The philosopher David Hume developed a skeptical epistemology grounded in empiricism, and Immanuel Kant's philosophy has strongly questioned the very possibility of a metaphysical knowledge.
At least for now, consumer advocates are skeptical, on several grounds.
Putting aside the Orwellian quality of the product -- there is something just a bit unsettling about having your telephone rat out your mental state -- we're skeptical on practical grounds.
Koslicki (forthcoming) and Wilson (2014) both provide detailed skeptical challenges to grounding.
Theorem 16 in [Piero A. Bonatti, Reasoning with infinite stable models, Artificial Intelligence 156 (1) (2004) 75 111] states that ground skeptical and credulous inferences under the stable model semantics are decidable when the given normal logic program is finitary.
In this regard, any political ideal must take into account general social facts if it is to be feasible; but it must also be able to respond to a series of social facts that ground skeptical challenges suggesting that circumstances make such an ideal impossible.
That is to say, Hume pursues what we may call the hard skeptical aim of providing grounds for denying the theist hypothesis in its various thick forms.
Of course, this is a problem for the folk psychology realist as well as the eliminativist, since Stich's skeptical argument challenges our grounds for distinguishing the two.
And antigovernment fighters and activists inside Syria, who have long complained that the coalition offered little concrete help and had little connection to the struggle on the ground, remain skeptical of any interim government based outside the country.
