Why would the null hypothesis be that there is a supernatural force allowing human brains to work? In any other
phenomena do you say it's magic until proven material?
I don't think we have, so far, a clear definition of what's 'material'. Thinking of the centuries old question 'why is there something rather than nothing', I believe magic and natural don't make much difference. Even an agnostic and occasional religion bashing deGrasse wonders in face of the mathematically describable world. Isn't it magic that make us wonder? Hence, supernatural is not such a despicable minion concept.
Talking, arguing for materialism also means that one separates materialism from 'the rest' or 'the other ways of seeing the world'.
This means that anyone calling themselves a materialist must also have a concept of this 'rest'. But what the heck is it if you fully believe in a materialist world?
