Matrix programming in Excel

Excel is like a giant matrix programming pad. Take a financial statement for example: I am just learning to read one and I am discovering the logic behind the usage of the tool.

The statement can be considered a computer program made up of arithmetic and logic operations on matrices. One of its output is the Balance Sheet, that pulls results (i.e., invokes functions) from the various other sheets, namely: Income Statement, Cash Flow Statement, Revenues, Expenses, etc.

Now for the reader of the full statement, it is important to be able to easily follow the logic, especially if he is not familiar with well-known conventions of financial statements. It would be useful to afford navigating from the result cells to their constituent cells, thereby "reverse-engineering" the formulas. Visual tools like graphing the cross-sheet relationships would further help understanding the calculation, and thus the tought process of its designer.