What I was arguing is that if we assume your position then we cannot even affirm your position, because it would be a position that would be determined by prior brain state and chemical reaction. Even scientist when useing the scientific method assume that they can make observation that are inteligible.
New thoughts can have antecedent causes.
We don't establish laws, we discover them. We never invented laws of nature, we just discovered what was already there. Again, I'm not arguing against the scientific method, rather just taking note of the fact that determinism destroys objective knowledge. If everything is determined including our brain state then your discovery process is just as determined, which would make it a rather pointless endeavor. In other words, everything you do or think is determined by prior causes.