For his second-to-last time hosting an episode of "Marketplace Morning Report," David Brancaccio spoke with the author of arguably the most influential book on personal finance and investing of all time. First published in 1973, "A Random Walk Down Wall Street" argues that it’s super hard to beat the stock market. Its author, Burton Malkiel, is a Princeton professor emeritus and still going strong at 93. We have that conversation, as well as a preview of March's consumer price index.