People conform to certain stereotypes, sometimes knowingly,
  sometimes unknowingly. Mind you,, most people believe that
  they're "normal". That's a stereotype. Of course there are
  different stereotypes of normals to different people, but every
  culture has some sort of stereotype of normal that they
  basically accept.

  While I believe we're all individuals... at the same time, our
  mannerisms, assumptions about life, how we think, doesn't just
  fall magically from the sky either. We're shaped and work within
  those shapes, sometimes busting free of them and absorbing other
  shapes. Ok, that doesn't help an ISTP at all does it?