Getting to 35 million tests per day would cost around $100 billion, according to Romer. It’s a steep price tag, but a fraction of the $350 billion or so in monthly economic losses due to the ongoing lockdowns and social distancing measures in the United States.
R. Jäschke, F. Eisterlehner, A. Hotho, и G. Stumme. RecSys '09: Proceedings of the 2009 ACM Conference on Recommender Systems, New York, NY, USA, ACM, (2009)(to appear).