D-C Dave wrote:
<<Pairs: (12,30), (12,45), (20,30)
Pairs 1 and 2 are "related" because they both have 12.
Pair 3 is not "related" to either 1 or 2.
Bill Renaud" wrote:
Pair 3 WOULD be related to pair 1 because 30 is common to both, therefore,
Good grief. How could I let that by me?

I suppose in some forms of Social Network Analysis (see
http://en.wikipedia.org/wiki/Social_network et.al.), linkages do not
operate the same way that electrical connections do.
Well, I want to spend some time on that.

Tnx, D-C Dave

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