David Paul and Nick Batsford, CEO of Core London, discuss the latest updates for Worry-Free Investing, a mechanical and conservative trading system on VectorVest that has had a very good run this year. This trading system is perfect for prudent investors or those interested in growing their retirement accounts over time. In Worry-Free Investing, we sort all of the shares by Relative Safety (RS), which measures the safety and predictability of the earnings. These shares have an impeccable record of making money.