At supermarket a M&M with X-oz pack in X-flavor, it's not a individual, but a product with a given price.
There are many packs like that, all with same barcode... despite there are many products with different barcodes.
That was I mean with the barcode metaphor.
Quote:
Originally Posted by redpoint5
At least barcodes are unique and not associated with other "groups" of barcodes. The proper level of analysis of anything is at the most specific level possible. For people, that is the individual.
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