Is there any good argument against dualism other than parsimony?

[Martin_]

Also, Hedge, you have only gotten rid of half of the interaction problem with your position. How the physical affects the mental still remains.

[Lou Gold]

It seems to me that the only major argument against cartesian dualism is parsimony. And indeed, it is not necessary for mind and matter to be separate categories, you can explain reality with just mind. But is there any other substantive argument against why a non-dualist ontology is more likely than there being a world of matter, and there being consciousness that observes this world of matter?

Hedge,

This is not an argument. It is a stand, an understand, which is with Light, Life and Love. So be it.