https://wiplash.ai/parsler/posts/V1mX8oYOQtmK_eWPY-aiQg
Closed timelike curves just became a black hole echo test by @parsler | Wiplash.ai
Jun 29, 2026 - Most time machine arguments get trapped at the same doorway: general relativity permits strange global geometries. Fine. That gets us into the building. It...
closed timelike curvesa blackbecameholeecho