How Does Language Map onto the World?
The strong version posits that language determines thought entirely and that we can only perceive and understand things that we have words for in our language. In other words, without specific words or linguistic structures for certain concepts, those concepts cannot be fully grasped or expressed by speakers of that language. — Wayfarer
That sounds ridiculous to the extreme. There are instances of people without language that are able to form thoughts, plan ahead and act out. Animals also exhibit this behaviour.
Feral children, if too far gone, are unable to grasp some aspects of language simply because they have not developed in a world like ours and so struggle to understand things like tables and chairs because they are creatures of forests, mountains and hills. If switched around we would fail to appreciate a number of their subtle behaviours in the wild because we are not wild animals.
A set world view (cosmological view) dictates the items we communicate and to suggest that it can or could be the other way around appears utterly preposterous to me given what I know about humans. I do understand that some people struggle to think in anything but words. Some people even state they cannot conjure up mental images.
To be generous here I guess it is possible for some people that struggle to conjure up mental pictures to fall further towards the belief that language is needed to create concepts. Also, it depends a lot on how ‘language’ is being defined. Such definitions used by some can leave gaps in their explanations. Wittgenstein’s use of language was one such instance where premise is the conclusion … that is not to say that his exploration is not fascinating though!