world-domination/time-travel
4 activities
Hempel's Ravens
thursday, may 15, 2014 — 10:18:18 utcbarbershop paradox
thursday, may 15, 2014 — 10:16:48 utcconsistent causal loop
thursday, may 15, 2014 — 10:15:20 utcinconsistent causal loop
thursday, may 15, 2014 — 10:14:37 utc