 { key: 'EST' },
      { key: 'ESF' },

      // terminal nodes: the personality descriptions
      {
        key: 'INTJ',
        text: 'INTJ: Scientist\nThe most self-confident of all types.  They focus on possibilities and use empirical logic to think about the future.  They prefer that events and people serve some positive use.  1% of population.'
      },
      {
        key: 'INTP',
        text: 'INTP: Architect\nAn architect of ideas, number systems, computer languages, and many other concepts.  The