You could arrange to have a computer that makes a random decision as whether to erase the 'which-path' information or not.
What do you think?
Would we have to have a human being acting as observer or could we use something else?
It doesn't seem to matter if there's a human observer on the scene, or whether the human obtains the information via a non-conscious system. Either way, the information becomes accessible to consciousness. The cat is out of the bag (or the box
) I wonder how the universe 'knows' that the cat is out of the bag!!!
Could the universe as we perceive it really be said to exist in any meaningful way in the absence of observers?
So, the question now becomes: does reality for it to exist need an agency to interpret it?
This is the crux of the matter, isn't it? If we insist that the observer be human, then we are a step closer to saying that nothing existed before humans were around to do the observing.
John Wheeler suggested something that more or less amounts to that: - that the act of observing 'creates history'. There are better explanations on the net. But, as you can imagine, his peers thought that was going too far.
I guess any consciousness capable of comprehending the observable event will suffice, be it in the form little green men or whatever.
