“This is only indirect support for our hypothesis, since it comes from different languages and a different empirical domain. But it does give some independent evidence that syntactic movement can have different effects on the features involved in agreement in different languages, which is our central theoretical proposal.”
Mark C. Baer, Roberto Aranovich, and Lucia A. Goluscio. 2005 “Two Types of Syntactic Noun Incorporation: Noun Incorporation in Mapudungun and Its Typological Implications.” Language: 81, no. 1 (March): 138-176.
Now you don’t need to know what they’re actually talking about in the article or even the context of the these two sentences to know that this is completely ridiculous.
Look at their central theoretical proposal:
…syntactic movement can have different effects on the features involved in agreement in different languages…”
To paraphrase, “Our theoretical proposal is that languages are different.”
Wow, we linguists are a brilliant bunch.