In our article (Zawadzki and Adamczyk 2021), we analyzed threats that novel memory modifying interventions may pose in the future. More specifically, we discussed how optogenetics’ potential for reversible erasure/deactivation of memory “may impact authenticity by producing changes at different levels of personality.” Our article has received many thoughtful open peer commentaries for which we would like to express our great appreciation. We have identified two main threads of objections. They are related to the potential applicability of optogenetics as a (...) therapeutic memory modification technology (MMT) in humans—applicability thread, and the normative value of authenticity, that is, the assumption that preserving authenticity is valuable (either in general or in the particular approach we adopted)—normative thread. Both of these threads concern fundamental issues: The former deals with the scientific credibility of the case vignette on which our discussion is based, and the latter deals with the normative weight of our considerations. We think that addressing both of them can be instructive in a broader context as they reflect a more general disagreement among neuroethicists about the very purpose and method of our discipline. (shrink)