https://unityindifference.com/2026/04/21/still-haunted-by-the-ghost-of-descartes-why-the-hard-problem-wont-disappear/Unity in Differenceen-gb2026-04-21T04:25:20+00:00Still Haunted by the Ghost of Descartes: why the hard problem won’t disappearhttps://unityindifference.com/wp-content/uploads/2026/04/photo-1572025197965-e682f092203c.jpg?w=150