http://www.jneurosci.org/cgi/content/full/23/18/7160
So read it and please argue with the authors Schwartz, Howe, and Purves. It would be nice if you pulled some highly suspicious quotes and then sliced and dice'm proper so I can understand your objections.
I have no dog to wash in this. I would have picked utterly different ways to approach the idea that human symbolic systems tend to have their own maybe not translatable relationships to language. Two points here. Language might be the primary carrier of culture, but it isn't alone and in many ways has been found by most people to be too limited. Also language is not synonymous with thought, only a certain kind of thought. Finally since linguistics studies language, they want to make over reaching claims for its carry capacity that I don't think are there....
But carry on with your own objections with Howe et al. Please. And post what you find.
CG