How do we answer… Where are we investing our money? Where is the money going? What are we getting for our money? Let’s start with what not to do. Product Maker Skepticism: Sadly, many methods teams use to understand the return on investment for product development activities inject bad things into the system. Many people throw up their hands and settle for a crappy method that "does the trick."
“To even pretend to put those things in a spreadsheet is a disgrace to spreadsheets.”
So much wisdom and experience packed into this article, John!