And his criticism of state transportation plans has proved embarrassingly accurate: witness the cost overruns, and changes of mind, in a proposal to build a $2.1 billion, 14-mile light rail system in Seattle.
Such plans have proven malleable in the past.
Many such plans have proven effective at curbing costs, even if they are not always popular.
Ambitious transportation plans have proven themselves valuable as PR stunts, not only in politics, but increasingly, in the private sector.
These free-data plans have proven to be popular among consumers, particularly low-income Americans, and have enhanced competition in the wireless marketplace.
Integrating equity concerns into sustainability planning has proven difficult.
Such a plan has proven to be virtually impossible.
Yet the plan has proven divisive even within the Liberal Party, with some of Abbott's own allies dubbing it unaffordable.
A.: Since it was first approved in 1811, Manhattan's grid plan has proven impervious to all but a few attempts to improve on it.
That game plan has proven successful for the San Jose, California-based company.
