On this episode, we track the changes in Peter Singer's ethical views throughout his career. We talk about Emotivism. R.M. Hare's Prescriptivism. Nozick's Experience Machine. Some thought experiments from Derek Parfit. Henry Sidgwick and Objectivist Hedonistic Utilitarianism. Hope you enjoy it! Sponsors: ZocDoc: https://www.ZocDoc.com/PHILO LMNT: https://www.DrinkLMNT.com/philo Better Help: https://www.BetterHelp.com/PHILTHIS Thank you so much for listening! Could never do this without your help.  Website: https://www.philosophizethis.org/ Patreon: https://www.patreon.com/philosophizethis  Social: Instagram: https://www.instagram.com/philosophizethispodcast X: https://twitter.com/iamstephenwest Facebook: https://www.facebook.com/philosophizethisshow