A friend suggests that you can ignore the miss chance on creatures under the effect of a Blink spell when dealing positive energy damage, based on what is written on the description of the Incorporeal subtype.
Of course, Blink makes its target ethereal, not incorporeal, and the two are separate enough that an ethereal ghost can manifest and become a material (but insubstantial) creature for a while.
My friend pointed me at this text from the Blink spell:
An ethereal creature is invisible, incorporeal, [...]
I did some research and it looks like other spells, like Ethereal Jaunt, have a different wording:
An ethereal creature is invisible, insubstantial, [...]
Therefore, I think that Blink's incorporeal just means "that can be passed through by solid matter", and that it is not talking abut the subtype.
Has there ever been an official clarification solving this conundrum?