Robert Kugel makes a great deal of sense in his blog article "Planning for Fixed-Asset Investment Requires the Right Tool, Not Just a Spreadsheet | Big Fat Finance Blog." Spreadsheets are clearly the default application for anything financial, but endless interconnected cells have significant limitations.
Whitebirch advocates a more structured approach to modeling repetitive items such as fixed assets, loans, employees, to name a few. Object based modeling, where an object type (e.g. fixed assets) can have any number of "instances" that share the formulas/logic rather than copying them, is ideal for solving the problems Mr. Kugel identifies. A change to the object type flows automatically to all the instances. No intervention required. Adding another asset requires no new formulas. The resulting calculations of depreciation and accumulated depreciation can be summarized for inclusion in a larger financial model or completely integrated in their entirety.