This recommendation proved to be difficult to implement at NYGH because we were in the midst of an outbreak.
Yet reform proved difficult to implement.
But such harsh ideas have proved tricky to implement.
In practice, however, the concept has proved difficult to implement.
In department after department, year upon year, ministers have proved unable to implement effective policies.
On his second day in office, Mr Obama ordered Guantanamo be closed within a year, but it proved impossible to implement.
Such tax initiatives, however, historically have proved difficult to implement in the time frame in which recessions have developed and ended...
The so-called third-generation (3G) technology, on which mobile operators have spent $100 billion on licence fees alone, has proved difficult to implement.
Even Alan Greenspan, who supports a tax cut, pointed out in Congressional testimony, "Such tax initiatives... historically have proved difficult to implement in the time frame in which recessions have developed and ended".
Unsurprisingly, it has proved complicated to implement (and has often failed wildly), but, at least in theory, it is far more graceful than police officers or the military blasting their way across human terrain.
