## Animated Logical Graphs • 20

Another tactic I tried by way of porting operator variables into logical graphs and laws of form was to hollow out a leg of Spencer-Brown’s crosses, gnomons, markers, whatever you wish to call them, as shown below:

The initial idea I had in mind was the same as before, that the operator over $q$ would be counted as absent when $p$ evaluates to a space and present when $p$ evaluates to a cross.

However, much in the same way that operators with a shade of negativity tend to be more generative than the purely positive brand, it turned out more useful to reverse this initial polarity of operation, letting the operator over $q$ be counted as absent when $p$ evaluates to a cross and present when $p$ evaluates to a space.

So that is the convention I’ll adopt from here on.

### 1 Response to Animated Logical Graphs • 20

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