Why would you ask me a question, then answer it yourself?
The answer, in fact, is YES
According to The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
That is indeed a reasonable definition for our universe.
one_raven said:
"Universe" is a word invented by humans to describe EVERYTHING as a whole.
Yes - but "everything" is only everything that exists - and "exists" is only as exists within this universe. If something is utterly unknowable, from our point of view, it would be non-existent. But in the grander philosophical scheme of things - it could well exist - such as in another universe that operates with entirely different properties - or it could exist entirely outside the universes as we know them.
one_raven said:
If there is more than what we know to exist, it is STILL part of the universe.
Not our universe, the universe.
If the universe is ALL that exists, how can anything NOT be part of it?
Anything that ISN'T part of it, doesn't exist.
"Exist" as defined by our universe and as relates to our universe.
You can not know what is not within our universe.
Okay - another analogy.
You're in a room.
No way out.
No windows.
No light.
But the room is entirely self-sufficient.
What is outside?
Now imagine that the walls of this room are not physical - but are merely where interaction with anything else ceases.
What is outside?
Now position yourself OUTSIDE the room - philosophically speaking (not physically).
You look at the room (room A) - and you actually see two such rooms (A and B) - next to each other.
The person in room A has a word - "universe" - that he uses to describe everything that exists. To him, that is everything that is within his room. He can know nothing about that which is not within his room. He also has another word - "existance" - being everything knowable inside his room - everything inside his "universe".
The person in room B has the same words - but they are relative to him.
This is the dictionary definition of "universe" - from the point of view of the person within that universe.
BUT - what does the person outside the room see?
He, surely, must have his own definition of "universe" - of "existance"?
He can see two smaller universes, and he knows that one universe can never know about the other - but can certainly conceive of the possibility.
How does your definition of "universe" apply to a person in room A?
Does it incorporate the wider possibility of room B? Of the room enclosing rooms A and B?
Mine doesn't.
I am person A - and I can not know that there EVEN IS a room B. Room A might be all there is.
I use "exist" relative to within my own universe - as I see the possibility of their being a room B - which might operate on an entirely different set of physical properties, not to mention the room enclosing rooms A and B which are likely to be different again.
To me, in room A, the universe is everything that can interact with something else within the universe - i.e. bound within the universe.
Now - what if the person sitting outside of room A and room B actually created room A?