No, this is not about your CPF Retirement Sum. But really, the amount of money you need for your retirement. Some of us have a fuzzy idea of the amount that we need. When we work backwards, it translate into fuzzy numbers that we need to save or invest each month. Retirement fuzzy logic. The issue is, not all of us are programmed this way. We need firm inputs or data — if I spend X dollars a day from the day I retire, I need to save Y dollars each month today minimum for at least Z number of years. That is the purpose of today’s discussion. So imagine the older you is chilling and taking in the sights of the Singapore skyline. How would you advise your younger self? Rule of 25 towards Early Retirement ...