smartyman wrote:
Dear Vyshak,
In 1971 researchers hoping to predict earthquakes in the short term by identifying precursory phenomena (those that occur a few days before large quakes but not otherwise) turned their attention to changes in seismic waves that had been detected prior to earthquakes.
Researchers initially reported success in identifying these possible precursors, but subsequent analyses of their data proved disheartening.
Based on these 2 statements:
since subsequent analyses of their data proved
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