https://docs.prosperity.com/2916/0568/0539/The_Legatum_Prosperity_Index_2020.pdf
https://www.gatesnotes.com/2018-Annual-Letter?WT.mc_id=02_13_2018_02_AnnualLetter2018_DO-COM_&WT.tsrc=DOCOM
https://aclanthology.org/2021.acl-long.4.pdf
https://www.brookings.edu/wp-content/uploads/2020/06/Brookings-Reopening-the-World-FINAL.pdf