You want bad? A bank had a "professional" call me about helping me with planning my finances. A savings account is paying .6% interest, and that with restrictions. I asked her "roughly how long would it take my savings to double, using the rule of 72?". She didn't even know what the rule of 72 is! And that's the banks "expert".
It doesn’t matter. At .6% by the time your money doubled! you would be dead and the money wouldn’t be worth anything.