The Game of Logic eBook

This eBook from the Gutenberg Project consists of approximately 66 pages of information about The Game of Logic.

The Game of Logic eBook

This eBook from the Gutenberg Project consists of approximately 66 pages of information about The Game of Logic.
-------             -------
| 0 | 0 |           |   | 1 |
13.  |---|---|      14.  |---|---|
|   | 0 |           | 1 |   |
-------             -------
-------             -------
| 1 |   |           | 0 | 1 |
15.  |---|---|      16.  |---|---|
|   | 0 |           | 1 | 0 |
-------             -------

[See pp. 65, 6]

6.  Larger Diagram.

Propositions to be represented.

__________
-----------
|     |     |
|   --x--   |
|  |  |  |  |
|--y--m--y’-|
|  |  |  |  |
|   --x’-   |
|     |     |
-----------
__________

1.  No x are m.

2.  Some y are m’.

3.  All m are x’.

4.  No m’ are y’.

5.  No m are x; All y are m.

6.  Some x are m; No y are m.

7.  All m are x’; No m are y.

8.  No x’ are m; No y’ are m’.

[See pp. 67,8]

Taking “rabbits” as Universe; m="greedy”; x="old”; and y="black”; represent

9.  No old rabbits are greedy.

10.  Some not-greedy rabbits are black.

11.  All white rabbits are free from greediness.

12.  All greedy rabbits are young.

13.  No old rabbits are greedy; All black rabbits are greedy.

14.  All rabbits, that are not greedy, are black; No old rabbits are free from greediness.

__________

Taking “birds” as Universe; m="that sing loud”; x="well-fed”; and y="happy”; represent

15.  All well-fed birds sing loud; No birds, that sing loud, are unhappy.

16.  All birds, that do not sing loud, are unhappy; No well-fed birds fail to sing loud.

__________

Taking “persons” as Universe; m="in the house”; x="John”; and y="having a tooth-ache”; represent

17.  John is in the house; Everybody in the house is suffering from tooth-ache.

18.  There is no one in the house but John; Nobody, out of the house, has a tooth-ache.

__________

[See pp. 68-70]

Taking “persons” as Universe; m="I”; x="that has taken a walk”; y="that feels better”; represent

19.  I have been out for a walk; I feel much better.

__________

Choosing your own ‘Universe’ &c., represent

20.  I sent him to bring me a kitten; He brought me a kettle by mistake.

[See pp. 70, 1]

7.  Both Diagrams to be employed.

__________
-----------
|     |     |      -----------
|   --x--   |     |     |     |
|  |  |  |  |     |     x     |
|--y--m--y’-|     |--y--|--y’-|
|  |  |  |  |     |     x’    |
|   --x’-   |     |     |     |
|     |     |      -----------
-----------
__________

N.B.  In each Question, a small Diagram should be drawn, for x and y only, and marked in accordance with the given large Diagram:  and then as many Propositions as possible, for x and y, should be read off from this small Diagram.

Copyrights
Project Gutenberg
The Game of Logic from Project Gutenberg. Public domain.