Therefore, mass media provide an incomplete indication of correlations between events and resulting actions. Finally, human interpretation of specific events could influence data processing and the results of the assessment, although this can be reduced somewhat through expert participation. Among the security of supply aspects evaluated were included cost effectiveness and fuel reserves, besides reducing national CO2 emissions. Nuclear energy in the Japanese situation decreases fossil fuel imports and total power generation costs, which consequently boosts national macro economy by stimulating consumption through increased investment and lower consumer electricity prices.