What ball? I only see atoms reflecting light...
That's what we call a 'ball'.
what it looks like to you is subjective.
It looks the same to everyone.
All humans can mate with each other, produce children, hence, they have the same brains and same experiences.
Some variation? Yes, but my left eye's perception varies from my right eye. That we collapse the variations between eyes proves the variations are insignificant differences.
So if it is true that my 'red' is the same experience as your 'red', then it's not subjective, it's objective. It's an objective experience, because we all have the same experience, within a degree of variation.
Ah, my experience of 'red' color has little to do with the ball over in the corner?
That' doesn't change the ball.
I walk into a room, I see the red round ball.
You walk into the room six hours later, you see the red round ball.
We both meet at the coffee shop and we both have the same descriptions of the object. We both call it 'red', we both call it 'round', we both combine those facts and just call it a 'ball'. I didn't just make up 'green' because I love the color green, rather, we both know what to call it, a 'ball'.
That proves the object itself is objectively real, otherwise, how did all 8,000 of us relate the same description? We didn't have random reports, except for Bob who likes to mess things up and joke (he called it a 'clear kite' and kept touching the girls).
Otherwise, our relation of the facts would be random, you would see, who knows, a green umbrella, the next day I go in I would see a monkey arm, etc.
That it is consistant across different times and observations proves its existence is an objective fact.
That my 'red' experience does not describe the details of the atomic structure is a side show.
Imagine the following machine:
I have a machine that mulitplies your fact by 2, every time.
You put in a 7, it displays 14.
14 has nothing to do with 7, they are two different things.
But the 7 exists, objectively, and to be fair, the 14 is directly produced by the 7.
That there's a hidden muliplier is interesting, it proves we don't know everything, but the multiplier is consistant and therefore when we learn to deal with our 14, we learn all we need to know about the objective 7. In fact, the symbol '14' essentially means 7, I just don't know how to break it down, I don't know some significant facts about the 7, but the 7 remains objectively real and true.
Who would you hire as an accountant or bridge builder?
Person A: "I'll get it right for you, every time."
Person B: "Hey, man, who's to say what's real?
Everything is subjective, there is no objective reality, so, lay off."