The real thing doesn't really exist

I know the title is quite confusing and you can raise a debate. But this is right. Real things actually not real for some people.

Let's discuss how:

Everyone knows how blind people read and write. They use Braille system (a touch system) for it.

Also they can't see how a sphere or cube look like. They just can feel the shape by touching.

After learning this, if you ask them to find out which one is sphere and which one is cube, they can find them out correctly.

But now a question raise, if a blind man gets back his eyesight, can he find out them just by seeing their shapes (not by touching)?

This experimental thought was written in the last centuries. So they didn't know the answer. But due to the medical sector's improvement we know it.

The answer is NO!...

That man can't identity which one is sphere and which one is cube just by observing their shapes. They have to learn things again. So, their one time familiar things become quite unknown.

This is why it's called real thing doesn't really exist!

Special thanks to @Ashma for this great support and cordial help to everyone.

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