 To conclude this section, it should be noted that not all the views discussed above have been put forward under the label of metaphysical foundationalism. But once it is made clear that the foundationalist idea is not tied to the strong, set-theoretic sense of well-foundedness, the requirement for a foundation is much weaker than it may once have seemed. If we broaden the scope of metaphysical foundationalism accordingly, is there still an interesting sense of metaphysical infinitism to be discussed?