Abstract: This chapter focuses on objections to the claim that arithmetical concepts are empirically grounded. It argues that the most common form of objection to projects of this type is based upon a failure to appreciate that it is even possible that empirical input grounds our arithmetical concepts. It traces this view through an illustrative selection of influential philosophers: Kant, C. I. Lewis, Ayer, Quine, and Fodor.

Keywords: Thinking Too Big, Objections, Kant, C. I. Lewis, Ayer, Quine, Fodor,