Interpretation...is it valid critique?

[Truerenigma]

"You can't really share a painting with someone without actually painting it."
Of course you can.

" And the act is done in the physical world subject to such laws as
gravity (paint may drip and run), therefore art isn't only in your head."
Yes, the painting exists as a real object; your opinion that it is art is what
exists in your head. my opinion doesn't affect the art.

"It's poses a non literal philosophical question"
Yes, metaphor can be extended.

"equivalent to such Abstractions as
"beauty is in the eye of the beholder"
Yes

"does a tree make a sound if no one hears it?"
Trick question as 'sound' has multiple definitions.
Physics: Yes
Perception: No

"Does art exist in nature?"
Art can exist anywhere, the only requirement is perception. does that mean that doubting it is art makes it art? the only requirement for existence is perception (or doubt)!

"If we are not observing the art does it crease to be art?"
The painting doesn't cease to be, your opinion that it is
art continues until you change your mind or forget it.
does the same apply to trees?

"Where does the Art actually occur?"
In your head.
mine or yours, if it's mine than I'll be the judge of where

"It cannot be proven, it's entirely figurative."
If you are implying that meaning is derived from metaphor, then yes.

hmm, maybe it's a cliche
The act of perception can be proven; it's the qualities (well, most
of them anyway) that can't

'All he is saying is "I can have a different opinion than you,
and you can't prove me wrong because my opinion is based
on my perception, not yours".'
Some opinions can be proved wrong (or right) and some can't.
He's talking about where art is created, not assigning logical values.

"Ergo, an artist must be objective,"
He's not requiring the artist to be anything.
my words, not his. This is called deductive reasoning. Also, I've read past the quote
"and understand and be aware of the physical limitations imposed
on the creation of his art, he must also be aware that there are
differences of opinion and different points of view regarding art,
he must use both sides of his brain."
Again, he's not requiring the artist to be anything.
again, my words not his

"One must not forget that art requires a physical medium (even music requires sound),"
Art doesn't require a physical medium; it's a perception.
thinking about art isn't art. It's thoughts about art.
A painting requires a physical medium, perceiving it as art doesn't. thinking about a painting is not painting, painting is an art form.
(We'll ignore brain cells at the moment, even though that's a big mistake.)

"and it should be supported in one way or another by logic.
If the logic is irrefutable all the better."
Logic is optional. Some artists like to play with it, some don't.
opinion=personal preference, and vice versa, and history and the definition of Art isn't rewritten every time we have one. (if I don't think Monet is art, well it still is.

---

'One could say, "well art, like evil, is an abstraction, and a
man-made concept, it doesn't exist in nature, or outside of our minds".'
Yes.

"We have no proof of that either, we don't know if we invented it, or just named it, or whatever."
Yep, no proof. Perception doesn't require proof even though some parts
of it can be proved (and most can't).

"We call language and communication art,"
Some do, some don't. I studied language arts in grade school, we all called it language arts.

"are dolphins artists?"
Yes.

"We have absolutely no proof that we aren't works of art ourselves,"
Of course we're works of art!

"that we weren't created by some other being that created a world full of
artistic entities to perpetuate his/her/their own artistic nature and glory."
Yes, so far there is no proof.

"Or an assassin bug squatting over us, shoving a proboscis right through
our breast plate then sipping-(dean young). "
Or my grandmother isn't a trolly car.
existence is perception, I'm am my perception of me, you are my perception of you, etc.
"In a way art is part of how we communicate, and seek to understand, explain,
and re-create the things around us, both far and near- it's bound to be influenced by the outside world."
Metaphor subsumes all that and more. What about metonymn