That is a nice view in theory, but doesn't mean much in reality, even if they release a spec who is going to be able to build an implementation to compare. It w

That is a nice view in theory, but doesn't mean much in reality, even if they release a spec who is going to be able to build an implementation to compare. It will end up like GNUStep. Even languages that are open like Python have trouble maintaining language compatibility across multiple versions. Written specs are also riddled with ambiguities and implicit assumptions which make the creation of a "perfect" clone very hard.