[albatross79]

"That which can be measured is a real thing."

But this is just mystifying measurement. It's a convention that's been adopted because we've had to regress on the question of what is a real thing. It's not something you can look at or hold in your hand, it's not even something with material reality necessarily, it's just something that can be measured, or rather something that can be inferred to exist given the measured behavior of other things - i.e. gravity. You make it sound like it's a given, but this definition is a position that's been arrived at by progressive regression.