 Building on the work of phase 1, it was more comprehensive in objectives and scope, and refined many of the phase 1 estimates, particularly demand and cost estimates.Less ambitious proposals have included a minor Jindalee Deviation mentioned in a 2006 Ernst and Young Report.Naturally a slow evolution consisting of many short deviations which can provide benefits sooner will not be equivalent to a few large deviations which could provide bigger bypasses and greater benefit.