 Given this background, there are at least three objections that have objected to features intrinsic to some—by no means all—nudges. The first is that nudging often occurs without the nudged being aware they are being nudged. The second is that nudging often works by harnessing defects in the thinking of those being nudged. The third is that some nudges (besides those subject to the first two objections) are forms of objectionable manipulation.