But with McCain's history, these assertions of change ring false.
Early Greek atomism is generally taken to have been formulated in response to the Eleatic claim that 'what is' must be one and unchanging, because any assertion of differentiation or change within 'what is' involves the assertion of 'what is not,' an unintelligible concept.
During the 1990s, scientists were still debating the most basic assertions of climate change science.
The assault last week on the dissident union candidate, William Davenport, undermined the union's assertions of a change in its internal culture.
The company Castlebeck continues and yet despite assertions of substantial change, until recently a trainer was apparently still using the same questionable methods for inducting new staff on physical intervention.
For example, after all of the layoffs, organizational changes, assertion of executive hierarchies and the destruction of traditional company rules of behavior, the HP Way that the old-timers are fighting to save is probably already dead.
That is why Gordon Brown's extraordinary insistence this week that Iraq has been "liberated" is so worrying - but why Harriet Harman's assertion of the need to change the mould of politics, particularly foreign policies, is to be welcomed.
For the MoH, the assertion of leadership enabled a change in their own practices: without externally imposed time constraints or donor conditionalities, the MoH was able to place an equal emphasis on the process as well as the results.
Will Savage, chief executive of the Aluminium Federation (Alfed) said: "Alfed disagrees strongly with the assertion of the Committee on Climate Change that the UK's climate change policies have not led to closures of important aluminium production facilities in the UK, and is not convinced that the conditions are yet in place to prevent more closures in the future.
Keller asserted that Dapa is an unprecedented unlawful assertion of executive power and one of the biggest changes in immigration policy in American history.
