 Debates about future people also connect to other recent controversies within contractualism, especially the literature on risk. The divide between ex post and ex ante justification is especially significant in non-identity cases, where ex post justification can be offered to particular individuals while ex ante justification can only deal with person types. Should contractualists give their person-affecting principles an ex post or ex ante interpretation? (Weinberg 2003 and 2015 defends an ex post interpretation, albeit within a Rawlsian framework rather than a Scanlonian one; while Parfit 2017 clearly sets out the ex ante alternative.)