Oh definitely. Ultimately, I think it's a bit of a questionable
  theory; the readability connected to sentence length and
  syllables. But it's what they use in thousands of schools in the
  USA to assess appropriate reading level and kids are placed in
  different classes and graded depending on these results so if
  it's good enough for the US Education system, I suppose I can
  use it too. ['cause even putting kids in grades the way they do
  is kinda their thing tongue emoticon ] But as far as scientific
  validity? Well, I could unpeel that onion gladly but I'd have to
  take into account the concept of 'averaging' people and such
  first....and go from there smile emoticon