Triple bottom line TBL = people, profit, planet (3Ps). 1981: Freer Spreckley says firms should measure their TBL. 1994: John Elkington’s 3Ps suggests sustainability as a goal.  1997: his book ‘Cannibals with Forks‘ asks firms to measure/ report financial performance, social wealth creation & environmental aspects.  What next for stakeholders?  Quadruple bottom line, which includes…