hi robin!

On Jan 7, 10:49 am, Robin B <robi...@gmail.com> wrote:

> The first statement says, in practice, the id alone is unique across
> kinds for root-entities, the second statement says the kind+id is
> needed for uniqueness across root-entities.  Could you please clarify?

yes, as you guessed, the difference is between what we explicitly
guarantee and how things actually work under the covers.

as i mentioned earlier, the only hard guarantee is that the full path
is unique. in practice, right now, ids themselves are actually unique
within each entity group (across kinds), and separately, across all
root entities (also across kinds). we don't have any plans to change
that in the near term, but it's still just an implementation detail,
not a hard guarantee.
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