<prompt> Human: Lets please, for the sake of discussion, ignore the fact that rates are currently so low that it hardly matters, but:Barclays online savings accounts earn 0.9 APY, and yet they offer a 3-month CD at 0.35 APY a 6-month CD at 0.55, a 9-month at 0.6, and a 12-month CD at 0.8.Allys online savings accounts earn 0.87 APY, yet their 3-month CD earns 0.3 6-month CD earns 0.61, and 9-month CD earns 0.64.The stated rates are APYs, the annual percentage yield.So what is the point of locking up your money in a 3-month CD if it would earn three times the interest if you just leave it in a savings account? It makes no sense.  <response>: The potential advantage comes from the fixed rate. If you think high interest saving rates are going to go down to .5 and you have money you wont need for a year, you might decide to lock in your .8 rate. Of course, if rates dont change, dont go low enough, or go up, then it wasnt a great decision. 