{
  "id": 18521403,
  "title": "A Strange Quantum Theorem Has Killed Einstein’s Reality",
  "url": "https://urgent.news/2026/11/06/a-strange-quantum-theorem-has-killed-einsteins-reality",
  "topic": "world",
  "section": "World",
  "published": "2026-11-06T15:48:54.000Z",
  "source": {
    "name": "Quanta Magazine",
    "slug": "quanta-magazine",
    "url": "https://www.quantamagazine.org/a-strange-quantum-theorem-has-killed-einsteins-reality-20261106/"
  },
  "original_language": "en",
  "account": "Einstein's understanding of reality was based on the concept of object permanence. This idea suggested that objects have intrinsic properties that exist independently of perception or measurement. However, quantum mechanics, a well-established theory, appears to contradict this notion. According to quantum mechanics, properties such as color can only be assigned to an object when it is measured. Prior to measurement, only probabilities are provided. In the 1930s, Einstein proposed a thought experiment to challenge this surreal interpretation of quantum mechanics. However, his argument was ultimately unsuccessful. In 1964, physicist John Stewart Bell conducted a thought experiment that demonstrated the inherent strangeness of reality according to quantum mechanics. Subsequent tests confirmed Bell's findings, ultimately proving him correct. Several decades later, Matthew Pusey, along with his colleagues Jonathan Barrett and Terry Rudolph, took the next step in attacking Einstein's notion of reality. In 2012, they published a groundbreaking theorem known as PBR, which effectively disproves the common-sense understanding of reality. The PBR theorem asserts that quantum mechanics is incompatible with the perception of objective reality. This revelation has shaken the foundations of our understanding of the world.",
  "summary": "Albert Einstein fought to save our everyday notion of reality from the strangeness of quantum mechanics. But those who set out to aid him keep poking holes in his argument. The post A Strange Quantum Theorem Has Killed Einstein’s Reality first appeared on Quanta Magazine",
  "key_points": [
    "Einstein's reality concept based on object permanence",
    "Quantum mechanics contradicts object permanence",
    "PBR theorem disproves objective reality in quantum mechanics"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}