>>142 さらに、 Rothwell also pointed out that Arata performed three other control experiments: hydrogen with the ZrO2?Pd sample (no lasting heat); deuterium with no ZrO2?Pd sample (no heating at all); and hydrogen with no ZrO2?Pd sample (again, no heating). Nevertheless, Rothwell added that Arata neglected to mention certain details, such as the method of calibration. "His lecture was very difficult to follow, even for native speakers, so I may have overlooked something," he wrote.