Laurence Kotlikoff, professor of economics at Boston University — the founder of Maxifi, which factors economics into personal financial planning — says that while the economy is humming along now, investors should be wary of the potential for trouble, especially stemming from the high levels of tariffs that were a part of President Donald Trump's campaign promises. Kotlikoff — who hosts the Economics Matters podcast — worries that if tariffs are placed at levels not seen since the Great Depression, they could result in dramatic inflation and other problems as other nations respond and retaliate. Kotlikoff also discusses how investors should be thinking about the timing for making Roth IRA conversions now, and how to determine the right amount of life insurance to hold. Jeffrey Hirsch, editor of the Stock Trader's Almanac, returns to the show to discuss the latest print edition of the almanac for 2025, and how a classic effort like a printed almanac fits into a market world that leans hard into technology. Plus Melissa Stephenson discusses a PlayUSA.com study which showed that Americans are struggling with "tip fatigue," with 1 in 3 Americans admitting that they tip less money or less often now than they used to.