<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bell&#x27;s_theorem" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bell&#x27;s_theorem</a><p>Certain observations are probabilistic, and the correlations in them predicted by quantum mechanics cannot be reproduced by ascribing them to the traits of particles.<p>It means that at the lowest level, the universe is (barring faster-than-light communication, generally regarded to be false) &quot;truly random&quot;. (No concept of an &quot;observer&quot; needs to be devised in order to arrive at this conclusion).