      /                                           |
|         |             /                                            |
|         |            /                                             |
|   NECESSARY NATURAL /___ ARE THE SAME AS THE _____ LOGICALLY NECESSARY
|   CONSEQUENTS                                      CONSEQUENTS OF THE MODEL

HP: Let me elaborate.  The only formal part is in the right vertical column.
    All the rest is a kind of epistemological diagram indicating the necessary
    condit