In this episode, David discusses the difference between experiencing life through the various filters humans apply by default, and knowing what objective reality is really like.

Pragmatic ethics:
https://en.wikipedia.org/wiki/Pragmatic_ethics

Red pill and blue pill:
https://en.wikipedia.org/wiki/Red_pill_and_blue_pill

The Matrix film:
https://en.wikipedia.org/wiki/The_Matrix

Experience machine:
https://en.wikipedia.org/wiki/Experience_machine

Direct and indirect realism:
https://en.wikipedia.org/wiki/Direct_and_indirect_realism