"This should not be pressed too far. Where questions of defamation may arise ambiguity is best avoided as much as possible. It should not be a screen behind which a journalist is ‘willing to wound, and yet afraid to strike’. In the normal course a responsible journalist can be expected to perceive the meaning an ordinary, reasonable reader is likely to give his article. Moreover, even if the words are highly susceptible of another meaning, a responsible journalist will not disregard a defamatory meaning which is obviously one possible meaning of the article in question. Questions of degree arise here. The more obvious the defamatory meaning, and the more serious the defamation, the less weight will a court attach to other possible meanings when considering the conduct to be expected of a responsible journalist in the circumstances"