And since he has become prime minister, Turnbull has also ignored his own advice because of the politically-expedient need to keep the conservative Liberals and the Nationals onside.
Pimlott solves some of the mysteries, showing why Wilson had no choice at times other than to be expedient and dissembling to keep a divided party together.
Many here are expecting some sort of expedient political stratagem to keep the nation's leader from the demeaning spectacle of a trial.
Later, she found it expedient to maintain a paid workforce.
This may be politically expedient, it looks good to keep civil servant numbers down; and maybe practical, you don't always have the skills you need.
The most expedient way for Mr Saakashvili to keep such pressures at bay is to play the patriotic card, keeping the country on a constant state of alert against the perceived risk of further Russian aggression, and keeping alive the prospect, however remote, of restoring territorial integrity.
And if On Expenses had presented the real history of how the scandal came about, it would shown how it has been expedient for all three parties to keep "their" MPs pampered and dependent.
They, like the queen's opinions, are her own business, and the Duchess has retained the moral high ground in her battle with the more unsavoury parts of the media by the simple expedient of taking reasonable steps to keep them to herself.
