In the long history of evolution it has not been necessary for man to understand multi-loop nonlinear feedback systems until very recent historical times. Evolutionary processes have not given us the mental skill needed to properly interpret the dynamic behavior of the systems of which we have now become a part. J. W. Forrester, 1971
Tuesday, June 1, 2010
Record Low Snowfall
According to NOAA, “Across North America, snow cover for April 2010 was 2.2 million square kilometers below average—the lowest April snow cover extent since satellite records began in 1967 and the largest negative anomaly to occur in the 521 months that satellite measurements are available.” (from the Earth Observatory, 5/27/2010)
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September 11, 2001 Re-imagined Redux
Back in May, President Trump abruptly dismissed "dozens national security advisors from US National Security Council (NSC). NPR reporte...

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