Derek Parfit's Birthday!

<a href="https://www.google.com/url?q=https://en.wikipedia.org/wiki/Derek_Parfit&amp;sa=D&amp;source=calendar&amp;ust=1671557547909792&amp;usg=AOvVaw2BFY-ERvvYRIfECWD_0Jvj" target="_blank">Derek Parfit</a> was perhaps the greatest moral philosopher of the 20th century, in how he shaped the discipline and raised important new questions. <br><br>He gave us the Repugnant Conclusion and the Hitchhiker&#39;s Dilemma, and put a plug for giving 10% into <i>On What Matters</i>, his masterpiece. Had he lived long enough to finish another volume, he had <a href="https://www.google.com/url?q=http://dailynous.com/2017/01/02/derek-parfit-1942-2017/%23comment-96731&amp;sa=D&amp;source=calendar&amp;ust=1671557547909792&amp;usg=AOvVaw2Y8vbk28wweupN5IRHEzYy" target="_blank">plans</a> to discuss existential risk and dive deeper into questions of how we ought to act.<br><br>How to celebrate Parfit&#39;s life and work? You could discuss population ethics, philosophize about something else, or consider, as a group, ways to make your lives slightly more rational. (Or just eat cake and sing Happy Birthday and engage in idle, friendly conversation; Parfit surely wouldn&#39;t object.)