Epicycles in a geocentric model of the solar system is another way of looking at planetary motion. It breaks down due to the required addition of complexity to explain discrepancies between the model and truth, which is the same for this particular situation. In addition to what the CPA said, how does this model work with callable, putable, or floating rate bonds where the interest payment is not known up front?

I understand there's a reason why accountants do things the way they do. But hacking is about looking at things differently. To use your analogy, one can definitely gain insight into planetary motion from a geocentric model even if it's not the best model for all purposes.