Perhaps the waves were crashing or rolling into different shores at times or perhaps the ebb and flow of the waters is how this learning spread.
We could calculate the impact in some quantitative way, spending much time crunching numbers, or we could tell the stories of how this learning spread. As Brene Brown states "Stories are just data with a soul." So taking the lead from Brene we can tell you some stories, but for now let's take a picture walk of how this learning spread.