When it’s over COVID 2020 will be examined as an exercise in risk management. The same was done for the financial crash of 2007-2008. Tomes have been written about it. But the book which provides the most valuable information is Stephen Drobny’s The Invisible Hands (2012), a compendium of interviews with hedge fund managers who survived and even profited during the meltdown. What did they know the others did not? I read the book as an ethnographic text and categorized the sources of the hedge fund managers knowledge. The chart below is a visual representation of the different kinds of knowledge and relative value in managing risk.