OST is closed for business but its spirit survives on my blog.
“But how could it be the wrong meaning if the only meaning the thing had was the meaning I gave it?”
It’s only wrong if something else is right. If you were the first person ever to have seen a red tulip and you exclaimed “Ah, a blue tulip!” Your peers who also now see it will no doubt correct you by saying that it is red, not blue. Even though they have never seen it before and are happy to call it a tulip, just as you have named it, they are not happy to describe it as blue. But that is only possible because there is an environment in which blue and red have already been defined and accepted as part of the language you speak. Red and blue are existing categories. Thus, you can only be wrong or right in the context of a shared language. If you were the first person to have ever seen anything red (or blue) and you exclaimed “Ah, a blue tulip!”, how could you be wrong?