"Business model” was one of the great buzzwords of the Internet boom, routinely invoked, as the writer Michael Lewis put it, “to glorify all manner of half-baked plans.” A company didn’t need a strategy, or a special competence, or even any customers—all it needed was a Web-based business model that promised wild profits in some distant, ill-defined future. Many people—investors, entrepreneurs, and executives alike—bought the fantasy and got burned. And as the inevitable counterreaction played out, the concept of the business model fell out of fashion nearly as quickly as the .com appendage itself.
The Pew Charitable Trusts: Tax Revenue Has Recovered in 31 States, Despite Flat Q3 - Growth in total state tax revenue stalled in the third quarter of 2016, extending a rare drop in tax collections outside of a recession. Even so, more than seven years after the end of the Great Recession, receipts nationally and in 31 states have risen enough to recover from losses in the downturn, after accounting for inflation.
You have a really smart Business Analyst who is great in Excel and builds you an awesome financial model. The person is available to make changes to the underlying model to adapt to your evolving needs.
Then the person informs you they are leaving the company – and when they leave you are left with a black box model.