Chris Marti:
Does an object have to have physical properties? Does a thought have them? An emotion?
Whether objects are necessarily physical, whether they exist wholly or partly independently of experience, seems to me a different question altogether. What I was trying to say cuts across that controversy.
I concur with the original -- and with your follow-up -- that experiences (no matter what they're 'of', if anything) don't have the properties we ascribe to objects, like weight, dimensions, or locations. They're in a different ontological category.
In other words, even if you're a realist who believes in the inherent existence of objects independently of consciousness, you still can't weigh or measure the
experience of an object.