Here are two definitions of world given in Flew and Priest’s Dictionary of Philosophy:
- The totality of what exists
- The totality of what exists outside the human mind
Definition #2 suggests that the world and mind are separate, therefore the mind is not part of the world. It also suggests that the world is somehow created by the mind, and it depends on the mind to exist.
Two problems arise from this. One is that what is the quality of this mind that does not match the qualities of the world? Secondly, how does one person’s world match to another person’s world? Furthermore, if the first mind is the creator of the world then it must be creator of the second person’s mind as well. Or else, the mind is not your mind but the mind of someone else’s (God as Berkeley suggests).
Somehow I suspect that definition #2 is the definition for idealism, mind-only monism, rationality, and logic based philosophies.
Only definition #1 is feasible.