Humans are complex, and we are able to entertain many thoughts and many variables of thought, simultaneously, so we can survey and analyze, in order to choose the most appropriate measure. When would we ever decide to only use an action and remain silent, as if in ‘mime’, if we were serious about achieving the best conclusion?
We have speech ability so we can direct our complexity of thinking, outward. As is suitable for a human life, and we have speech ability for this reason, in addition to being our greatest creative tool.
A chimpanzee suits actions without words, as organization required is less complex, because issues are less complex. Humans require speech / discussion / debate / meetings, to bring about understanding of all variables and considerations needing focus.
The more complex or difficult, requiring consideration of many factors, the more the need for careful analysis and considerate discussion. Not less.
Actions of violence, without words, such as serious warring, can NEVER bring about a resolution. Real problems that require humans to be in their full managing potential to solve, can only be solved via our innate speech ability.
Warring is no way of reaching a resolution for a human being. It is the action of a chimpanzee. 🙂