Why are references at schema.org and google developers not consistent?

Hello!

I realizied even, that there is another one site with Schema.org references, once from Google: https://developers.google.com/schemas/reference/ And this Google's reference site contains some types (i found two, but there must be more), which generates 404 by quering of Schema.org site while there are a link to Schema.org...
Look:
- https://developers.google.com/schemas/reference/types/Order, this one isn't present at Schema.org, 404, and this one too:
- https://developers.google.com/schemas/reference/types/Flight, the same 404 at Schema.org.

This uncompatibilty makes me doubt in the usability of the whole Schema.org system: if there are more than one site, each of them with different types, so which of them is trustful? Which types from which site can i use, if the "standard" site gives 404 to type, which are peresent at developers.google.com? Are all webmaster forced now to stop using microdata till there will be only one standard site again?
Can somebody give a clarity, which types from which site are really standard and can be used withoud doubt?

Thanks

Received on Saturday, 9 November 2013 16:55:52 UTC