“There will be only three significant currencies used in the world by 2063. More than 95 % of the countries in the world will use one of them.”

Created by gwern on 2010-07-30; known on 2063-01-01

• gwern estimated 66% on 2010-07-30
• gwern said “http://www.longbets.org/122” on 2010-07-30
• themusicgod1 estimated 53% on 2016-10-06
• pranomostro estimated 35% on 2019-01-14