The Commensurate Sales to Popularity Concept (CSPC)
There are two ways to understand this revolutionary concept. The first is the Scribe video posted below. If you are unaware of the CSPC method, you will get the full idea within just a couple of minutes.
If you are a mathematical person, and want to know the full method, as well as formulas, then you can read the full introduction article.
Now let’s get into the Spice Girls’ detailed sales figures in order to apply this concept and define the their true popularity!