Questioning the basis of understanding.

For a long time, I have wondered why the red is red, green green, and blue blue. Does everyone look at the same thing? Does a single object look identical in everyone's visions? How about sounds? Tastes? Texture?

I believe many people who have read my previous post will have absolutely no idea about what I am trying to say.

What I mean is whether an object of a certain shape, size, colour, texture, smell, will appear to another person to be the same.
Does everybody see a watch to be the same watch? Does a shade of red appear to be the same shade of red? How sure am I that what I see is what others see?

Also, is the colour red red because many people agree that it is red? Or can the colour red be proven that it is red through some means where the senses of individuals are not taken into consideration? How else can one be sure that what he is looking at is the truth, and not a mere distortion of the truth?


This question is raised in the context of band once again. How do you know if your views at something is the same as the person next to you? How sure are you that you are doing the "right" thing when there is no clear definition of the "right" thing? What appears to be "right" to you might be "wrong" to the person next to you.

How can you trust your basic senses when you have no way of finding out whether your basic senses are sensing the same things as everyone else?

I know I am not making any sense here. But if by chance you read my post, and manage to understand my rantings, please explain them to me because I do not know understand what I have written so far.