Sadly, this article seems like a twisted joke.  Nearly every single non-&quot;modern world&quot; human with working legs speaks\spoke multiple languages, since in every direction you can find another potentially highly varied society living there.  Primates have immense curiosity, and we generally like to socialize, even beyond our own familiar communities (innately at least).  This inherently puts us among diverse environments, speakers, and interesting cultures (barring any violent opposition to free movement).<p>What would language skills have anything to do with this non-existent &quot;executive system&quot; anyway?  (tfa mentions someone&#x27;s guess about picking which language to use in any given moment.. something I&#x27;ve only ever seen novices and newcomers struggle with briefly, and only in conversation, not at all with internal dialogue.)  I only resort to language when I need high level processing; and then having many angles of analysis can help enormously.  When I need to focus on something, I do it as I envisioned or practiced and with kinaesthetic feedback (what other way is there?); language and other analytical tools inherently go another direction than working with my material environment.   Fundamentally, these psychologists&#x27; messy model of language&#x27;s relationship to localized brain functions in top-down systems falls flat on its face with this &quot;executive function&quot; concept mixing focus and inhibitory control with (yet another overly broad concept) &quot;problem solving&quot;, which they then hold up as a sacrificial cost to something great.