 It is undeniable that issues in the foundations of mathematics have been the central preoccupation of philosophers of mathematics through most of the 20th Century. This is not, of course, because foundational areas such as set theory are the only areas of mathematics where philosophers think that deduction takes place, but rather because—as pointed out above—focusing on deduction puts particular emphasis on the starting points of proofs. Even those sympathetic with this focus on foundational issues are likely to acknowledge that many areas of mathematical practice are thereby ignored. The question is what—if anything—of philosophical interest is lost in the process.