To view reality through a different lens from a different angle to see what can be found there. Some don't understand it at all and you cannot embrace what you don't understand.
It is entirely at the discretion of the artist
It involves viewers' cooperation (willing suspension of disbelief)
It is useful for filling in gaps
It is consciously unconsciously intentional unintentional or in tandem
There is NO LIMIT and NO RULES. Alice in Wonderland. Harry Potter. Tinker Belle. They exist due to artistic license and imagination. LOVE or HATE. ACCEPT or REJECT. It matters not to the artist. The artist creates. The public likes/dislikes. Accepts/reject. That's how it goes.