by Glen Whitman
Some new paternalists have recognized the slippery-slope objections to their approach, and they have made some effort to respond. But we find the responses insufficient (p. 735-737):
In their book Nudge, Sunstein and Thaler recognize the slippery-slope objections to their policies, and offer three responses. We reply to their responses here.Sunstein and Thaler’s first response is that the slippery-slope argument “ducks the question of whether our proposals have merit in and of themselves.” They say if the initial interventions are worthwhile, then we should “make progress on those, and do whatever it takes to pour sand on the slope.”
Our claim is not that slippery slopes are the only objection to the new paternalism. Various other objections have also been made (and referenced in the introduction to this Article). The slippery slope is an additional argument against the new paternalism.
The idea that we should “make progress” on the initial interventions, and then do what we can to “pour sand” on the slope, is a variant of the usual (and, we think, hackneyed) response to all slippery-slope arguments: that we can simply “do the right thing now, and resist doing the wrong thing later.” But if the slope argument is correct, there is a causal (albeit probabilistic) connection between initial interventions and later ones. Saying we should move forward on those initial interventions is akin to saying we should do something because it promises present benefits, while ignoring the potential costs in the future. Ironically, it is just this sort of error in private decision-making that most new paternalists think cries out for correction. The slope risk must be counted among the costs of the initial intervention.