21-12-22 I am a believer of Galileo’s ‘pendulum effect’ and Pareto’s ‘80/20 rule’. I particularly believe so after the social disturbance of 2019 and COVID-19 pandemic from 2020 to 22 in Hong Kong. Life swings like pendulum backward and forward: between happiness and pain, hope and frustration, and activeness and passiveness. Some said the past…