Triple convergence

[R. Sale]

I see it a little differently. The Roman example requires only one symbol to be in a certain location. The other two examples use two symbols and require a specific distance between them. I'll grant that it's hard to see the purpose. Using substitutions is too simple. However the examples themselves seem to be more complex and therefore less likely to result from random occurrence.

My intent is to point out what the text contains in the hope that discussion might lead to further insights.