 But now the suspicion may be that if all that is meant to be excluded is speculative reason without due regard to empirical and logico-linguistic evidence, the program’s success appears too easy. Few contemporary philosophers would confess to such reckless practices. Still, even the rejection of speculative reason is by no means uncontroversial, as shown by the unresolved status of the appeal to intuitions that characterizes much of contemporary analytical metaphysics and epistemology. Moreover, much depends on what’s considered to be “due regard”: is merely bad science “metaphysics”? Or only appeals to the supernatural? And what about de re necessities? Or the seeming commitments of existential quantification? The promotion of anti-metaphysics may be applauded in principle as an exercise in intellectual hygiene, the objection goes, but in practice it excludes either too much or too little: it either cripples our understanding of theoretical science or normalizes away the Vienna Circle’s most notorious claim.