I think anything I say at this point would be repeating myself. Suffice to say, I don’t think Picasso “created” anything in terms of perspective any more than I have created a new word or concept by blabbering “skjgnpsbg;alrwjhk;n!!!”
I agree that Picasso created nothing new in terms of perspective. But I hope I didn’t leave the impression that I was making such a claim. As for your nonsense word, it may or may not be meaningful in terms of the context in which it is placed. Consider Lewis Carroll’s “Jabberwocky”:
`Twas brillig, and the slithy toves
Did gyre and gimble in the wabe:
All mimsy were the borogoves,
And the mome raths outgrabe.
"Beware the Jabberwock, my son!
The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
The frumious Bandersnatch!"
He took his vorpal sword in hand:
Long time the manxome foe he sought –
So rested he by the Tumtum tree,
And stood awhile in thought.
And, as in uffish thought he stood,
The Jabberwock, with eyes of flame,
Came whiffling through the tulgey wood,
And burbled as it came!
One, two! One, two! And through and through
The vorpal blade went snicker-snack!
He left it dead, and with its head
He went galumphing back.
"And, has thou slain the Jabberwock?
Come to my arms, my beamish boy!
O frabjous day! Callooh! Callay!’
He chortled in his joy.
`Twas brillig, and the slithy toves
Did gyre and gimble in the wabe;
All mimsy were the borogoves,
And the mome raths outgrabe.
Yes, it is nonsense in that a great many of its words cannot be found in any English dictionary. But is it devoid of all meaning and value? I think not. What Carroll has accomplished here is an elaborate connotation. He provides just enough clues to suggest something dreadful and powerful, and yet by withholding precise details creates something that demands involvement, through conjecture, by the reader. So, yes, Inspector, in some circumstances “skjgnpsbg;alrwjhk;n!!!” could be a “brillig” thing to say!