Professor Jayanta (Jay) Bhattacharya is a medical doctor (MD, Stanford), economist (PhD, Stanford) and epidemiologist (Stanford Medical School) all rolled into one, giving him a rare set of credentials to assess the multiple dimensions of Covid disease and policies. An academic with virtually no public profile before 2020, he emerged as an articulate and compelling voice against the errors and excesses of Covid policies from early 2020 culminating in co-drafting the Great Barrington Declaration (GBD) in October.