Based on Penrose&#x27;s work there may be non randomness in the CMB, with better imaging tech we may find that this is not a good source of randomness: <a href="http:&#x2F;&#x2F;arxiv.org&#x2F;pdf&#x2F;1302.5162v1.pdf" rel="nofollow">http:&#x2F;&#x2F;arxiv.org&#x2F;pdf&#x2F;1302.5162v1.pdf</a>