I'm having trouble following the argument from your premise "it is a stupid question to ask why I referred to a chair as a chair instead of a snkwoo" to your conclusion "it is not a stupid question to ask why, when we have no answer to a question, we don't just say that we do have one".
The answer (to both of those questions!) is, of course, that we could do that, but it wouldn't accomplish anything. Asking the question just means you have no idea what you're saying. Or in other words, it's a stupid question.
> Asking the question just means you have no idea what you're saying. Or in other words, it's a stupid question.
So, to be clear, you're saying that the only kind of question that isn't stupid is the one where the querent already has perfect knowledge of the discipline?
I'm saying that to avoid asking a stupid question, you need to know the meaning of your own question. Stringing words together at random isn't going to get you there.
Compare the famous anecdote from Charles Babbage:
On two occasions I have been asked, -- "Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?" [...] I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question.
Is it necessary to have perfect knowledge of the workings of the Difference Engine to avoid asking that question? Of course not. Any knowledge at all would do the trick. If you put gravel into a water mill instead of grain, will you still get flour out of it?
A child asked her mother, “Can I put my hand in the fire?”. The mother responded, “That’s a stupid question. Of course you can.”. The child put her hand in the fire and got severe burns on her hand. She learned then that instead asking “Can I…” she should have asked, “Is it advisable…”. Unfortunately for her she lived in a society in which people frequently say things like, “You have to file taxes on or before April 15.” when they mean, “You can file taxes after April 15 but you may incur fees and penalties if you do so.”. She later became a teacher and was very patient with her students.
The answer (to both of those questions!) is, of course, that we could do that, but it wouldn't accomplish anything. Asking the question just means you have no idea what you're saying. Or in other words, it's a stupid question.