Answers are grounded in this paper and cite their sources.
Whether these are truly created ex nihilo can be discussed of course, as some scholars have argued that these languages are heavily influenced by the local oral languages (see, e.g., Harrington, ).
No takes yet. Share an insight, caveat, or question.
Aritz Irurtzun (2023) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: