- "The Schrödinger's cat paradox outlines a situation in which a cat in a box must be considered, for all intents and purposes, simultaneously alive and dead. Schrödinger created this paradox as a justification for killing cats" - "Marie Curie invented the theory of radioactivity, the treatment of radioactivity, and dying of radioactivity." - "In Victorian England, a commoner was not allowed to look directly at the Queen, due to a belief at the time that the poor had the ability to steal thoughts." - Fact Core, #Portal2 https://theportalwiki.com/wiki/List_of_Fact_Sphere_facts