text: 
  No Free Lunch Theorem - mgh2
  https://en.wikipedia.org/wiki/No_free_lunch_theorem
  ======
  s_Hogg
  This paper is great. Every beginner data scientist should be forced to study
  its implications, because they can be summed up to "anyone acting like a man
  with a hammer is actually an idiot with no clue". Not surprising it has
  survived the dawn of the information age completely in tact.
  
  