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• ömer bozkurt
• Istanbul
• Turkey

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Do all humans see all the colours exactly the same?A tree is green for me but for others ?

When i look at a tree , i see a colour ,and call it green; when you look at a tree , you see a colour and call it green.
But is it really the same colour? Your green may be brown for me , can't it?
when you tell me "green" I imagine a different colour from your green but I call it green. I mean, suddenly, if I exactly were you, I could sense the colour of a tree as brown or another colour. From childhood to now , I look at sky and call it blue, now suddenly if I become completely a different person (but not losing my memory) , do I call the sky's colour blue?
And how can be sure on it or how can we compare it and how can we measure it?
thank you for reading. plesae make me relax =) i want to sleep