Kinda, I mean so our brains shift once we are able to write things down instead of having to memorize completely, similarly when the internet happened we now could find answers quickly and stopped remembering or writing down things that were easy to find. So now thinking will shift again, dumber might be the right word, but it might not be, our thinking would shift away from computation type of knowledge and lean more toward making good judgments or having clearer goals type of knowledge.