It may all be bullshit. I've used manure on my garden years ago
  when bothered with a garden. I shoveled a lot of horse shit into
  my brother's truck. We dumped it on the garden plot, covered it
  with plastic, turned it over with shovels three months later and
  planted. Best tomatoes ever.

  So, there's value in bullshit. It's all what you want to do with
  it.

  But... I tend towards being a pragmatist. Part of my cultural
  heritage I suppose.