One of the things I always wondered was about colors. If all of us saw colors differently, but got taught that a particular hue was blue : what if someone's blue was actually red? We'd never be able to describe it because there's no way for us to, right? Brings to mind - "A Chinaman of the T'ang Dynasty - and, by which definition, a philosopher - dreamed he was a butterfly, and from that moment he was never quite sure that he was not a butterfly dreaming it was a Chinese philosopher. Envy him; in his two-fold security." Yeah, re-reading Rosencrantz and Guildenstern Are Dead.

Gotta love talking about language and semantic domains. Thinking about the cognitive effects of language is always interesting though. It's kind of interesting the effect language can have: like when you don't need colors beyond brown/green and then you just don't recognize past them because your original environment doesn't have things that exuberantly colorful in it - supposedly there's some Micronesian island that has a population like that. And since we're coming into the world with preconceived notions, if we don't know what's outside of them : can we actually change how we think if we have no words to describe that feeling or idea? I dunno, maybe it'd be interesting to see if multilinguals think differently cognitively in brain scans versus people who only know one language, because their languages allow them to think about certain concepts in multi-layered ways rather than just a single approach?