Rolf and Joe discuss two philosophical theories of the self, Bundle Theory and Ego Theory, based on a paper by Derek Parfit. They return to the topic of the teletransporter, and although Joe is happy to go through the teletransporter, Rolf is convinced it means certain death.

Parfit, D. (2016). Divided minds and the nature of persons. Science Fiction and Philosophy: From Time Travel to Superintelligence, 91-98.