[LeGrande]

Of course it is. Any attempt to demonstrate the existence of the reality you are perceiving with your senses fails due to a lack of objective evidence. What if this is all a dream? How do you know it isn't? You don't. You, like the rest of us, must assume for the sake of argument that the world we perceive with our senses is Real. And that's true whether you admit it or not.

LOL If I smash your finger with a hammer, I guarantee that you will 'know' that hammer exists : ) You may believe that you are a dream of Vishnu's, but that doesn't cut it in the real world.

[dan1123]

If I smash your finger with a hammer, I guarantee that you will 'know' that hammer exists

Why? Because your senses perceive pain and that is somehow more valid than any other senses?

You make the assumptions that there exists an objective reality by which our senses give us generally valid information. Even "I think therefore I am" Descartes had to invoke God in order to justify an external reality.

[B-Chan]

LOL If I smash your finger with a hammer, I guarantee that you will 'know' that hammer exists

Ooh, really? I have been physically hurt many times in my dreams. Each time was real as far as I could tell at that moment. Was I really hurt?

If you were to smash my finger with a hammer, it would hurt, and the pain would be objectively "real"...

...just as the pain I felt in all those dreams was objectively "real".

Are you awake right now and reading this on the Web, or is this a dream? Either way, please objectively demonstrate how you know this.