Seventy French university students were recruited for the study and told they would be participating in a three-day experiment testing the effects of brightness of video games on visual perception.

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That makes them see Cyprus not as a failure of the Euro-experiment, but a fascinating case study for policies.

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There's a careful study of the Mariel boatlift, for example, which was a kind of natural experiment where a large number of Cuban immigrants were, if you will, dumped on the shores of Southern Florida all of a sudden in effort to try to find in the years after whether there was any negative effect on workers and black workers of this unexpected influx.

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To further study the reasons behind the findings, the researchers conducted a similar experiment in the controlled environment of a university lab.

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