[Max Power]

Originally Posted by MrBig

Do you mean that literally? If I understand what you are saying correctly, it means that, for example, a bookshelf, which I know is behind me right now, does not actually exist in objective reality because I can’t see it as I type this message.

How do you define “observation”?

In a truly subjective universe, there is nothing outside your own consciousness — no world, no bodies, no brain. Suppose I ask you the question, “If a tree falls in the forest and no one is there to hear it, does it make a sound?” With an objective belief structure, you might say yes, but you might also say no, depending on your views on quantum physics. However, if you believed in subjective reality, you have to reject the question entirely. You’d say that there’s no such thing as a tree outside your awareness. That tree doesn’t even exist. Nor does the forest for that matter. If you are not there to observe it, it doesn’t exist at all. Without consciousness there is no existence

From Steve's SR posts.