Oh gosh sunshine thanks for saying my post made you think, it made me go all red in my living room
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Fascinating debate, as I said modern art is not my specialisation at all, and I do think that some things take a while to get my head around. However I would like to suggest something to some people who have said that if you have to look at the white card to inform you about the painting then it isn't 'real' art.
I did think this myself for quite a few years, and I also would get irritated by the huge range of ideas that artists were trying to convey, lots with quite a lot of academic discussion needed to be read to understand the context. In a seminar I stated this view and my lecturer pointed out that a lot of what traditionalists call 'real art' i.e the Masters, are based on biblical stories. Because in the West (and certainly it is vital when studying art history) you tend to have a strong knowledge of the church and biblical stories you already understand the narrative and context without even processing it in your head.
For example this painting by Fra Angelico en.wikipedia.org/wiki/File:Fra_Angelico_043.jpg
is a depiction of The Annunciation. It is quite clearly an annunciation painting, and even if you couldn't recognise that straight away it is part of fresco cycle of the life of Jesus so within the context of the cycle as a Westerner it is likely that you could figure out that the painting was the annunciation part quite simply and all the associated feeling/biblical context surrounding it will be clear to you very quickly as you already have the knowledge in your head.
However imagine if you had never heard of the Bible, Mary, Jesus or Gabriel. Looking at the picture you wouldn't be wrong in thinking that those two figures are venerating the pillar in the middle of them and that we had some sort of artist that was painting lovely nice architectural columns...if you look at it like that it becomes a bit of a surreal and bizarre painting.
So what I am trying (probably failing) to emphasize is that the surreal/bizarre modern art may well have just an emotive and important message behind it, we just don't have the narrative voice so easily to hand to clarify what it means. We also dont have such a comprehensive ideal throughout the world anymore (i.e the Catholic church) so instead fo the majority of artists working on a similar theme (religion) which can be compared and contrasted very neatly, we have thoughts on climate, religion, planet, personal, politics which makes you have to work for the meaning in a different way.
Just quickly on the topic of group/solo artists, many academic texts have been written about the transformation of art as a trade to art as a solo master but we do generally know who worked as a team and who worked solo, mainly due to the era they worked in, but also due to the practise of Connoisseurship which aims to clarify who painted specifically what areas of a painting, it isnt a science though.
Sorry for the essay I love this subject 