So many do - though in this case there may be some justification.
I admit to not reading past the point where I realised they were applying a pure statistical method to climate change.  Whilst you can say the odds of a coin-toss coming up heads 10 times in a row is about 1000/1 (i.e. 99.9% improbable), the climate is a tad more complex.  So though we can prove that CO2 is a greenhouse gas, and can prove that human activity is generating CO2, and prove that CO2 levels in the atmosphere are increasing rapidly, and prove that since the industrial revolution the average global temparature has been rising ...... you can't absolutely prove that this means AGW must be true.  That is why the IPCC says that the probability lies between 95-100%.  I think that is in "beyond reasonable doubt" territory, yet some on this forum insist the polluters are "not guilty".  I don't understand that.
		
		
	 
  Unfortunately, the 99% probability level has been DISPROVED.
  Also at the 95% probability level.
   Both of these were in the initial papers cited by IPCC #4.
  The WSJ has a good story on it.  Note in response to the frequent claims about China being a GW champion - they are voting with their lack of feet.  See below.
[h=3]
Whatever Happened to Global Warming?[/h]
Wall Street Journal - 1 day ago 
[h=1]Whatever Happened to Global Warming?[/h] 	[h=2]Now come climate scientists' implausible explanations for why the 'hiatus' has passed the 15-year mark.[/h]
Sept. 4, 2014 7:20 p.m. ET
          
On Sept. 23 the United Nations will host a  party for world leaders in New York to pledge urgent action against  climate change. 
Yet leaders from China, India and Germany have already  announced that they won't attend the summit and others are likely to  follow, leaving President                                                                        Obama                                                                looking a bit lonely. Could it be that they no longer regard it  as an urgent threat that some time later in this century the air may get  a bit warmer?
 In effect, this is all  that's left of the global-warming emergency the U.N. declared in its  first report on the subject in 1990. The U.N. no longer claims that  there will be dangerous or rapid climate change in the next two decades.  Last September, between the second and final draft of its fifth  assessment report, the U.N.'s Intergovernmental Panel on Climate Change  quietly 
downgraded the  warming it expected in the 30 years following 1995, to about 0.5  degrees Celsius from 0.7 (or, in Fahrenheit, to about 0.9 degrees, from  1.3). 
 Even that is likely to be too  high. The climate-research establishment has finally admitted openly  what skeptic scientists have been saying for nearly a decade: Global  warming has stopped since shortly before this century began.
 First  the climate-research establishment 
denied that a pause existed, 
noting  that if there was a pause, it would invalidate their theories. Now they  say there is a pause (or "hiatus"), but that it doesn't after all  invalidate their theories.
 Alas, their  explanations have made their predicament worse by implying that man-made  climate change is so slow and tentative that it can be easily  overwhelmed by natural variation in temperature—a possibility that they  had previously all but ruled out.
...
If the pause lasted 15 years, they conceded,  then it would be so significant that it would invalidate the  climate-change models upon which policy was being built. A 
report from  the National Oceanic and Atmospheric Administration (NOAA) written in  2008 made this clear: "The simulations rule out (at the 95% level) zero  trends for intervals of 15 yr or more." 
 Well,  the pause has now lasted for 16, 19 or 26 years—depending on whether  you choose the surface temperature record or one of two satellite  records of the lower atmosphere. That's according to a new statistical 
calculation by Ross McKitrick, a professor of economics at the University of Guelph in Canada.
 It  has been roughly 
two decades since there was a trend in temperature  significantly different from zero. 
The burst of warming that preceded  the millennium lasted about 20 years and 
was preceded by 30 years of  slight cooling after 1940.
  
The warming in the last three decades of the 20th century, to quote the 
news release that  accompanied their paper, "was roughly half due to global warming and  half to the natural Atlantic Ocean cycle." In other words, even the  modest warming in the 1980s and 1990s—which never achieved the 0.3  degrees Celsius per decade necessary to satisfy the feedback-enhanced  models that predict about three degrees of warming by the end of the  century—had been exaggerated by natural causes. The man-made warming of  the past 20 years has been so feeble that a shifting current in one  ocean was enough to wipe it out altogether. 
 Putting  the icing on the cake of good news, Xianyao Chen and Ka-Kit Tung think  the Atlantic Ocean may continue to prevent any warming for the next two  decades. So in their quest to explain the pause, scientists have made  the future sound even less alarming than before.