He wrote a book of predictions that I read years ago. The big concrete prediction I remember from it was that health food would go mainstream, and it has. More recently&#x2F;concretely I was going by <a href="http:&#x2F;&#x2F;slatestarcodex.com&#x2F;2016&#x2F;01&#x2F;02&#x2F;2015-predictions-calibration-results&#x2F;" rel="nofollow">http:&#x2F;&#x2F;slatestarcodex.com&#x2F;2016&#x2F;01&#x2F;02&#x2F;2015-predictions-calibr...</a> .