plasebo

• "...
  dogbert: this'll cure you immediately.
  dilbert: really? what is it?
  dogbert: a placebo.
  dilbert: a placebo? now that you've told me it's a placebo, it's not gonna work.
  dogbert: it will if you think it will.
  dilbert: but i already know it's a placebo!
  dogbert: maybe it isn't.
  dilbert: you just said it was!
  dogbert: that's precisely the power of the placebo.
  ..."
  (bkz: dilbert)