Here&#x27;s a good video explaining random projection. It&#x27;s basically taking high dimensional data and reducing the dimensionality so that it&#x27;s faster to process. I don&#x27;t have any background in statistics but it was still intuitive to follow this talk.<p><a href="https:&#x2F;&#x2F;youtu.be&#x2F;V9zl09w1SGM?t=10m27s" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;V9zl09w1SGM?t=10m27s</a><p>I skimmed through the OP article, wasn&#x27;t immediately obvious how they deduced that brain does something similar, but I would have thought better understanding of actual neural processing on a biological level is required.<p>That&#x27;s not to say neurons&#x2F;brains don&#x27;t reduce data complexity to process it fast - I&#x27;m sure they do. But probably how exactly that happens is also important. Nature has had a long time to work this out.