Some years after the stick was constructed, Canadian statisticians Stephen McIntyre and Ross McKitrick challenged Mann’s work. They argued the “recent paleoclimate reconstruction by Mann et al. does not provide reliable evidence about climate change over the past millennium, because their data are inconsistent and their confidence intervals are wrong.”
Climate researcher Tim Ball even went so deep as to say that Mann “belongs in the state pen, not Penn State,” where Mann conducts research. Ball found out that was the wrong thing to say. Mann sued him in Canada.
Ball, however, beat Mann in court. The case was dismissed Friday. Almost immediately, Ball wrote to Anthony Watts of the wattsupwiththat website, telling him “
Mann’s case against me was dismissed this morning by the (British Columbia) Supreme Court and they awarded me (court) costs.” According to John Hinderaker, an attorney and PowerLine blog contributor, the case was thrown out “
with prejudice.”
“What happened was that Dr. Ball asserted a truth defense. He argued that the hockey stick was a deliberate fraud, something that could be proved if one had access to the data and calculations, in particular the R2 regression analysis, underlying it,” Hinderaker wrote. “Mann refused to produce these documents. He was ordered to produce them by the court and given a deadline. He still refused to produce them, so the court dismissed his case.”
John O’Sullivan at Principia Scientific International believes the “extraordinary outcome will likely trigger severe legal repercussions for Dr. Mann in the U.S. and
may prove fatal to alarmist climate science claims that modern temperatures are ‘unprecedented.'”