The new broad pattern will come owing to ideal while i let horizontal place mirror the advancement of the costs, as in Profile 2. One dotted diagonal is the “decades parity” range, where female and male years would be equivalent. It is really not a canonical math point, just things We overlaid because the techniques for your eye. (There’s always a built-in geometry so you can the right position – it had been the initial science for a conclusion and we’ll grab advantage wherever possible.)