nanu vastusattve saṃśayo yukto yataḥ satyapi vastuni tadanupalambhasya darśanātkadācit syād iti sambhāvyamānatvāt
[One might object:] "Indeed doubt regarding the existence of an object is justified because, even when the object exists, its non-apprehension is observed, [so] there is the possibility that it might sometimes exist"