Painting - a different platform?

ART
Is it an artisit's reflection of his surroundings, or is it a reflection of his mental model, or is it done keeping in mind the commercial aspect? Too many questions, an Enigma since each artisit has his or her version of answering to these questions.

Through centuries starting from cave paintings which were simple rendition of objects from surrounding to impressionist art to modern or as some prefer to call it 'abstract art'. What makes art go through its phases? What has led to the change in forms starting from cave paintings although if we look from the perspective of reflection of surroundings then the only thing that has changed is the artificial contour i.e the buildings, the roads while mother nature remains the same?

There are schools of art - the 'grammar' as they would call it - but does art or expression of your mind truly have any grammar? Are people moving to and fro in the grammar, real artists? I guess impressionism was a great breakthrough from the grammar of art - a true expression of your mind - going beyound the lines and giving life, motion within boundary of a canvas or medium.

What is abstract art? Is it anything and everything which is not understood - the cognitive strain on viewers mind on deciphering the artists thought is called modern art or abstract art? Even the belive by artists to prove to one and all that they belong to some other hemisphere - isn't art for everyone? Can't we call the cobbler, the house painter or even the rickshaw-puller artisits in their own forms? They all have creativity in their life and work, even the mother who brings up her child - they all create their own ways and methods which affects their surroundings in a small or big way.

I feel the most poignant truth is that there is no line or seperate breed called artists. Accordingly art should be grouped not as per the lines on the paper or medium but way beyond that - as per life itself where it gives a platform to one and all to express his or her mind . And not to forget the most successful artist in the world - Mother Earth herself.

All the world's a stage and everyone are artists in their own ways!!