On Wed, 1 Feb 2017 12:43:33 -0800, Karen Coyle <[log in to unmask]> wrote:

>Widely adopted means? By whom?

Widely adopted = adopted by a majority of libraries (of which, in the US, 
according to ALA, there are approximately 119,000, the vast majority of 
which use MARC now)

>What if some people use MARC, some use, some use
>BIBFRAME, some use RDA in RDF, others use Dublin Core, still others use
>the DPLA data format, yet all exchange data? Would that be a failure?

That's fine of course, but you're muddying the waters: my claim is that NO 
ONE (or virtually no one) will use BIBFRAME. It is impractical.