Berto 'd Sera wrote:
So it seems. Yet it's dictated by a simple fact: a dead language is taught to access existing sources and to learn the evolution of language.
Fine. That could justify a Wikibook about the language. It could justify the inclusion of texts in the language in Wikisource. It might even justify a Wiktionary for people who want to study the language. The case for a Wikipedia in that language is much weaker.
If you add a transistor radio to the Cro-Magnon section of a museum you're going to pollute that section with improper content.
One might similarly argue that air conditioning or other atmospheric controls should not be allowed. ;-)
Ec