Art
In relationship to art, and any other realm of human life, we see the human mind at play.
When awareness is attached to its content, it creates a sense of permanence and separation.
It attaches to ideas and ideologies and creates a sense of permanence. It it attached to opinions - which are different from that of others and creates a sense of separation.
In relationship to art, this is played out in ideas of what can and cannot be called art (narrow enough to exclude the views of certain others) and what is good art (again excluding views held by some others). Exclusive views are the consequences of - and uphelds - a sense of separation and uniqueness.
Of course, if we play the "flipping the sentences" game, we see that all these views have validity. They all have a piece of the truth. This brings us into a more inclusive view - which, depending on how we hold it - itself can be used to create a sense of separation, or of no separation - of intimacy.
From this view, we may see that art is beyond good/bad and valid/invalid. Or that it is good and valid whenever someone gets something out of it - an experience or an insight. And that is always the case. It can be a simple as that.
Of course, this view is also excluding and must be supplemented with the more discerning views, acknowledging that according to the many and different criteria - different pieces of art fall somewhere on the continuum of good or bad, valid or invalid. Of course, each piece will fall differently on the continuum depending on the specific criterion. There is nothing solid even here.