Coast FI promises that if you save enough early, your retirement money can coast the rest of the way. Don and Tom run the numbers and find the missing passengers: inflation, Social Security, uncertain returns, and the messy surprises of real life. They like aggressive early saving, but not treating a projection as a guarantee—or abandoning a valuable saving habit and employer match. The listener questions cover Treasury bills versus CDs in high-tax states, California municipal bonds, and how...