But this time round the public, opinion-makers, members of parliament are better informed and they will not just line up behind another Brussels rescue package.

BBC: Smoke and mirrors and the euro crisis

For most of the politicians and opinion-makers who wanted to appease Hitler, the Nazis were not much more than a raucous expression of German nationalism.

BBC: A Point of View: Churchill, chance and the 'black dog'

Why do so many opinion makers promote the zero-sum view?

FORBES: Magazine Article

Remember that decision-makers are also opinion leaders.

FORBES: Promoting the U.S. Brand "One Handshake at a Time"

But experience suggests that opinion makers are often too quick with up-or-down judgments about new ideas, and this hastiness is reflected notably in the history of business innovation.

FORBES: Two Cheers for "Bad Ideas"

Readers may therefore exercise their own judgments by listening to the audio files below, and decide whether, in their opinion, Dr Schwarze has cracked a problem that has defeated instrument-makers for 300 years: matching, or even beating, the Master of Cremona.

ECONOMIST: Violin-making