At 4:00 AM 06/27/2015, John Collier wrote:


I also see no reason that Bateson’s difference that makes a difference needs to 
involve meaning at either end.


[KM] Right.  The phrase saying “a difference that makes a difference” must be a 
prototypical example of second-order logic in that the difference appearing 
both in the subject and predicate can accept quantification. Most statements 
framed in second-order logic  are not decidable. In order to make them 
decidable or meaningful, some qualifier must definitely be needed. A popular 
example of such a qualifier is a subjective observer. However, the point is 
that the subjective observer is not limited to Alice or Bob in the QBist 






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