There is a certain innocence in numbers. Just like music, they can create a harmony that soothesthe soul. Maybe that’s why some costing professionals don’t stress when performing theircalculations. They put their numbers on the page, and they walk away. No harm, no foul. Theirconscience...

“Those of you familiar with my writings already know my opinion of the accounting concept of depreciation (“the dumbest concept in the history of management accounting”). I’ve been ranting against its use in decision-making since an article of mine on the subject appeared in Management...

“Sunk costs are irrelevant” is a principle stated in almost every book on decision science ever written. Despite this well-accepted principle of decision science, accountants continue to include their company’s biggest sunk cost as a major factor in determining its product, service and process costs....

In earlier blogs, I explained my views about depreciation; both its irrelevance in business decision-making and the way it is treated as a fixed annual cost. An organization does, however, need to provide for the preservation of its existing capital based as it sells products...

It's important to distinguish between measurements made from the financial accounting perspective and those made from the managerial accounting perspective. Periodicity is important in financial accounting. Expenses are measurements of the resources consumed during a specific period of time using measurable and auditable historical information...

During my four decades as a consultant, it has never ceased to amaze me how little attention manufacturing firms pay to the amount of time they use the equipment they’ve invested in to generate a return on that investment. The equipment uptime needed to drive...