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Scary Pictures

PRAGUE – Campaigners on important but complex issues, annoyed by the length of time required for public deliberations, often react by exaggerating their claims, hoping to force a single solution to the forefront of public debate. But, however well intentioned, scaring the public into a predetermined solution often backfires: when people eventually realize that they have been misled, they lose confidence and interest.

Last month, there were two examples of this in a single week. On September 19, the French researcher Gilles-Eric Séralini attempted to fuel public opposition to genetically modified foods by showing the public how GM corn, with and without the pesticide Roundup, caused huge tumors and early death in 200 rats that had consumed it over two years.