The existence of the mind is proof of a supernatural reality.
Were 'mind' purely a material artifact, then it would obey physical laws and would necessarily reach the same conclusion given the same set of facts. Since it does not, it is not material but supernatural.
All the best—GGG
Except that, as individuals differ, no two minds have the exact same set of facts. Even the same person, at two different points in time, has different sets of facts.
Which doesn't mean the mind is or is not purely material -- In fact, I believe that there is a non-material component to the mind. It just means that your statement is premised on an event that cannot happen, i.e., two minds having the same set of facts.