Stuff I'm happy to talk about approximately always and wherever. Roughly descending order according to my interest (but only roughly and my relative interest fluctuates, probably especially for the less-subjectively-interesting things).

• Alignment, agent foundations.
• Math and logic, in particular:
  • Category theory.
  • Non-classical logics.
• Philosophy, in particular:
  • Metaethics, metacognition, metamathematics; epistemology.
  • Philosophy of mathematics, (evolutionary) biology, science.
• History, in particular:
  • Alternative history, pivotal historical events (e.g. Siege of Jerusalem 701 BC).
  • Pre-Columbian America.
  • Interesting/inspiring historical characters (e.g. TR, Ikkyū).
• Rationality. Fixing and optimizing life. Practical wisdom.
• Languages (dead and living, formal and informal, natural and artificial).
• Psychonautics, psychedelics.
• Whatever you find in my favorite stuff page, especially fiction (or whatever adjacent stuff you know about that I may or may not know about).