Items to do
o Look at Stacked input with Pythia
o Slice out the NN<0.1 when looking  at low and high NN
o Examine DY NN scores for this analysis
o See if the last set of Pythia was done correctly.
o Can also suggest a change of name.
o Matt: From the fit results, the fact that the backgrounds don't change much
  may imply that the systematics may be a red herring: HOWEVER we should
  decorrelate the fit of high and low s/b 
o Matt raises another point in that fake events have extra missing Et because
  of real leptons in jets. This may interplay with DY or metspecial.  To
  study this we need to look at W + jet and examine the Dphi met-jet.
  Recalls that a number of events were lined up with met along jet in the
  high NN candidates.