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nydus/The Game of LogicPublic

This instructional book presents a logic game played with a diagram and nine counters. It explains how to express propositions through the relationship between things and their attributes.

Page 81 of 126
Table of Contents

CROOKED ANSWERS.

                                            -------
                                           | 0 | 1 |
 21.  No y exist, and some x exist.  i.e.  |---|---|
                                           | 0 |   |
                                            -------

                                              -------
                                             |   | 1 |
 22.  All x' are y, and all y' are x.  i.e.  |---|---|
                                             | 1 | 0 |
                                              -------

                                                -------
                                               | 1 |   |
 17.  Some x are y, and some x' are y'.  i.e.  |---|---|
                                               |   | 1 |
                                                -------
  1. Smaller Diagram.

Symbols interpreted.

  1. Some y are not-x, or, Some not-x are y.
  1. No not-x are not-y, or, No not-y are not-x.
  1. No not-y are x.
  1. No not-x exist. i.e. No Things are not-x.
  1. No y exist. i.e. No houses are two-storied.
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