The trend curve gives us a way to measure how life's going, and its greatest value is in giving us questions to ask ourselves to evaluate the current state of what we're trying to chart. I've been looking for a tool like this to think about the state of this very abstract idea of progress in life. It grounds the conversation for us, helps us make the choices more palpable, and gives us a historical context for consideration.
The piece it's missing in the reinvention arrow, the one that connects "post-peak" with "incoming". The curve makes it look as if there everything we are trying to chart will ultimately fade away into oblivion. This is not true so long as what we're charting can be remade, refreshed, or repurposed. Arguably, everything we are trying to chart has taken the roller-coaster ride of the trend curve many times before. Everything we have has already been.
Above photo found at http://mainland.cctt.org/biolab/Green_Metallic_Bell_Curve.jpg