Imagine this: you spend your entire lifetime working towards a very large goal called "Retirement." You invest decades of your life and millions of dollars into achieving this goal. And the sum total of the education and training you've received over those decades is how much of your income you need to save for retirement and what the magic "number" that you need to save is.Weird, right?Doesn't it seem like there's quite a lot more thinking and planning required in making one of the biggest deci