They were all predicated on ignoring the lessons of the failure of appeasement in 2000.

CENTERFORSECURITYPOLICY: A low and dishonest decade

One of the hardest lessons over the past decade is the failure of the international community to step up.

CNN: Luxury hotel symbolizes Afghan fragility

You know, I want to do everything I possibly can for my own child, but I think, you know, that there's this loss of the value of learning those lessons from failure, and I think it's just getting worse, and it definitely worries me.

NPR: Ask Amy: Responding to the Thin Envelope

We can fervently hope that the lessons will be more of success than of failure.

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He said that a failure to learn the lessons of the dispute would result in the "decimation" of the community pharmacy network.

BBC: Health Committee

The latter proved a somewhat astonishing reminder of forgotten lessons about nuclear power risks, unique to that technology: A failure of one power plant in an isolated location can create a contagion in countries far away, and even where somewhat different variants of that technology are in use.

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Some lessons were broad, like the importance of a corporate culture that tolerates both failure and change.

FORBES

He would like similar independent, after-the-fact scrutiny of every financial failure, to see what caused it and what lessons could be learned.

ECONOMIST: Financial economics

For followers of economics, the modern history of the baseball-card industry offers useful lessons about market responses to profit, anti-trust laws, business failure and inflation.

FORBES: Magazine Article

And he will suggest the coalition government has failed to learn the lessons of the past decade, describing the conflict in Mali and the growing terrorist threat in north Africa as a "failure in prevention and foresight".

BBC: French troops in Mali