The Game of Logic | Page 9

----- | i.e. No Cakes are nice.
| | |
| 0 | |
| | |
----- |
|
----- |
| | |
| 1 | | All y are x;
| | | i.e. All nice are new.
----- |
| | |
| 0 | |
| | |
----- |

|
----- |
| | |
| 0 | | All y are x';
| | | i.e. All nice are not-new.
----- |
| | |
| 1 | |
| | |
----- |

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This may be taken to be a cupboard divided in the same way as the last,
but ALSO divided into two portions, for the Attribute m. Let us give to
m the meaning "wholesome": and let us suppose that all
WHOLESOME Cakes are placed INSIDE the central Square, and all
the UNWHOLESOME ones OUTSIDE it, that is, in one or other of the
four queer-shaped OUTER compartments.
We see that, just as, in the smaller Diagram, the Cakes in each
compartment had TWO Attributes, so, here, the Cakes in each
compartment have THREE Attributes: and, just as the letters,
representing the TWO Attributes, were written on the EDGES of the
compartment, so, here, they are written at the CORNERS. (Observe
that m' is supposed to be written at each of the four outer corners.) So
that we can tell in a moment, by looking at a compartment, what three
Attributes belong to the Things in it. For instance, take No. 12. Here we
find x, y', m, at the corners: so we know that the Cakes in it, if there are
any, have the triple Attribute, 'xy'm', that is, "new, not-nice, and
wholesome." Again, take No. 16. Here we find, at the corners, x', y', m':
so the Cakes in it are "not-new, not-nice, and unwholesome."
(Remarkably untempting Cakes!)
It would take far too long to go through all the Propositions, containing
x and y, x and m, and y and m which can be represented on this
diagram (there are ninety-six altogether, so I am sure you will excuse
me!) and I must content myself with doing two or three, as specimens.

You will do well to work out a lot more for yourself.
Taking the upper half by itself, so that our Subject is "new Cakes", how
are we to represent "no new Cakes are wholesome"?
This is, writing letters for words, "no x are m." Now this tells us that
none of the Cakes, belonging to the upper half of the cupboard, are to
be found INSIDE the central Square: that is, the two compartments, No.
11 and No. 12, are EMPTY. And this, of course, is represented by