Determinism does not imply that our thoughts and feelings are irrelevant to how we act, that there is only unthinking stimulus and unthinking response. It implies that our thoughts and feelings cause our acts, but that those thoughts and feelings are themselves caused.Yes, but if determinism is true, then the content is irrelevant as long as you get the right stimulated response.
You don't actually believe that, I'm sure. And neither do determinists, because it is plain and observable fact that people respond differently to some words and sentences than they do to other words and sentences, depending on their content.He could have yelled POTS! and maybe he would have stopped. If there is no free will it doesnt matter the content of language, it can just be sounds as long as you get the right response from the hearer.
If you're not wasting your time shouting "stop!" (and again, you don't actually think that would be a waste of time), then you're not wasting your time saying "your argument is incorrect, because..."That is why you would be wasting your time developing a complex argument.