Breathtakingly ignorant.
Apparently, but it's nothing to be ashamed of, and can be corrected.
Here, let me help you out. Since this is only a forum, some brevity is usually in order. Since you ignore context, I could have said, "The development of the brain, alone, does not determine consciousness, because even fully developed brains are not necessarily conscious and frequently are not."
Does that help?
Hank