Is a right to be forgotten practicable?

Ed Lucas writes in the Economist:

The court’s desire to protect victims of misunderstanding and malice is understandable. But a right to be forgotten would be hard to implement. 

Even if Google is made to censor its search results in Europe, in America the First Amendment’s free-speech provision usually trumps privacy concerns. 

With modest technical know-how, European internet users will be able to make American-style searches. Europe will hardly want to build a Chinese-style firewall to prevent that.