Full Idea
Slippery slope arguments are not intended as demonstrative arguments, but rather as a challenge to show where a boundary is, and to show that the boundary is not arbitrary.
Gist of Idea
Slippery slope arguments are challenges to show where a non-arbitrary boundary lies
Source
Barbara Vetter (Potentiality [2015], 5.3.3)
Book Reference
Vetter,Barbara: 'Potentiality: from Dispositions to Modality' [OUP 2015], p.157
A Reaction
[extracted from details of its context] You could respond by saying that a slippery slope levels off, rather than hitting a wall or plunging to perdition.