Because English is the lingua franca of research and publishing about brains and cognition, English’s orthography, grammar, phonics, and word meanings profoundly bias our understanding of brains and cognition. (As documented in an article written in English. 🙂 )
It’s worth noting that Wittgenstein was vigorously rattling language’s cage a century ago. For a subjective experience of language’s strictures and absurdities, try to guess a secret word once a day!