This chapter discusses the presupposition of German auch (“too”). While secondary meanings associated with other triggers can often be informative, additive particles require their presupposition to be salient at the time of utterance. According to one account, additives require a parallel proposition to be salient (e.g. Beaver & Zeevat 2007). Another account suggests that only another individual needs to be salient, while the remainder of the presupposition can be accommodated (e.g. Heim 1992). In this chapter, an experiment comparing these two accounts is presented and discussed. It is argued that the second account is better suited to explain the results.