Bob Diamond didn't know, didn't ask, wasn't responsible for ...
James Murdoch wasn't aware, wasn't told, didn't know the precise status of ...
David Cameron had no knowledge of, didn't ask, never had an inappropriate conversation with ...
George Osborne wasn't sure what the questions were, but definitely didn't know

The only point they were clear about until the scandals broke, was that they weren't clear about anything much at all, even though widespread rule-breaking had gone on for years.