The 'old rules' of investing still work in a newfangled world

Bill Schultheis, author of the landmark financial book 'The CoffeeHouse Investor,' discusses how the simple rules of his popular effort -- involving diversification, minimizing costs and saving hard -- remain the key to success in a world caught up in meme stocks, cryptocurrencies and other shiny, sparkly financial products. Schultheis talks about how investors can stay simple yet successful now. In other interviews today: David Trainer of New Constructs puts the Rivian IPO in the Danger Zone, noting that the electric vehicle's expected market valuation is more than six times higher than a level he considers realistic-but-optimistic,  Alison Carnie talks about an Edward Jones, survey showing that people know the importance of end-of-life planning but that doesn't mean they're doing it, and author Jonathan Hillman discusses 'The Digital Silk Road: China's Quest to Wire the World and Win the Future.'