Comment by tonytran2015: (The next fall of US dollars after their rejection by Shanghai Cooperation Organization. posted on 2019/11/07, Saudi oil IPO may be part of a plan to support the exorbitant privilege of US dollars. posted on 23 Nov 2019).
Comment by tonytran2015: (Miseries unleashed by push for cashless trading, posted on 2017 Aug 22, Preparing for cashless trading, posted on December 5, 2016, Cashless bartering for survival, posted on February 20, 2017)
Comment by tonytran2015; It takes enormous energy to send a piece of metal flying over a distance of 3km.