Over the phone Bill and I were discussing with our son the problem of using “their” instead of “his” with a singular noun: “a writer expects their pencil to be sharp.” We got to discussing the advantages of speaking a language with non-gender gender (there is a technical term for this but I forget it), for example, that a bridge is either masculine or feminine. A scholar has conducted a study to see if this use of gender affects the way the people speaking the language view the object. She (for she was really a she) asked Spaniards how they would describe a bridge, and they would reply with an adjective that could apply to a woman: graceful, for example. A German would use a word that would apply to a man: solid. She was about to begin a study to see if the actual structures of bridges differed between Germany and Spain.
A Dutch friend told us that many years ago the king of Holland unilaterally declared that the Dutch language would no longer make non-gender objects have gender. His father, a scholar and a gentleman, was very upset with this.