Here&#x27;s a great post from 2014...has anything major changed in the last 18 months?<p><a href="http:&#x2F;&#x2F;assayviaessay.blogspot.com&#x2F;2014&#x2F;03&#x2F;virtual-spaces-real-data.html" rel="nofollow">http:&#x2F;&#x2F;assayviaessay.blogspot.com&#x2F;2014&#x2F;03&#x2F;virtual-spaces-rea...</a>