The very way we think is constructed by our society. Our society
  is constructed by the societies that came before. Our cultural
  assumptions are historical in basis. yet our understanding of
  history constantly changes and depends on our viewpoints at the
  time write the very history we depend on for a historical
  context!

  Doesn't mean that all is bullshit. There's some food in the
  poop. But finding it is messy.