material basis can't be an immaterial entity, though an immaterial entity bear a disposition.

[alanruttenberg]

I'm not sure what to do about this. The example given is a hole in a piece of wood that has a disposition to break 'because' of the hole. The question is what would the basis of a disposition that inheres in an immaterial entity be.

Raised by Werner Ceusters.

[alanruttenberg]

Maybe it should be that we have 'has physical basis' rather than 'has material basis', allowing immaterial entities to be physical bases.