Reverse Causality In Copenhagen Interpretation
What I always find interesting in reading any version of quantum mechanics claiming that observations or measurements affect the behaviour of an object, is that this implies a certain level of reverse causation.
A Measurement or observation occurs AFTER the event. Light travels, energy takes time to convert. Whatever your definition of measurement, a linear progression of time means that it must occur after the event in question. Essentially, the object behaves in a certain way because of something that happens in the future. The electron acts as a particle in anticipation of us seeing it happen.
It's an interesting paradox. We observe something because it happens that way, and it happens that way because we observe it.
Of course, if we consider the past and future to be simple extensions of a temporal dimension, this is not quite so far fetched. Forward and reverse causation may be as feasible as a ball rolling backwards and forwards along a line. Who's to say that time has any set direction at all? I know I'm coming from fairly left of centre here. But consider someone on a dimension above the temporal one we are subject to, who can see ours as we see spatial. Say they view our time as a single line. It doesn't progress at all, it all exists at once. Those bound to the dimension, like us, exist in some form along every point of the temporal line encompassing our lives. All points in your lifetime exist at once, and at each point, you have the awareness or 'memory' of other points along that line, but only in one direction; what we think of as the past. It would give the impression that you were moving progressively forward along the line, as at any point you appear to have more experience than at another point in your memory, suggesting a building progression, but how would you know?
If it all exists at once, as suggested above, there is no progress. But even say that there is a specific point on the line that is being experienced at a certain Time (Time being the temporal dimension of the outside observer, used to illustrate the hypothetical), and that this point was not static. It moved so that at different Times, those within the line experience different points in our temporal dimension. There is no way we would know that our current experience would follow the point immediately before and precede the point immediately after on the line. If our psychology is bound by time, and we have no way of objectively criticising its progression, there is no way we would ever know if the true experience and progression of time was linear.
And, bringing that ferociously overworded tangent back to the point, reverse causation could quite feasibly be possible.
-Maeve
u 4839573

Hmm. I'm not sure this is particularly grounded because I cant remember where I found this, but the way I understand it there is only reverse causation on the very very small quantum scaleā€¦ it still doesn't map with the larger-scale physics we have. Although I think that in the end, we are bound by our psychological ability to understand it all, namely here our psychological arrow of time. Not very helpful I know! But this is rather amusing:
"Man Arrested At Large Hadron Collider Claims He's From The Future"
http://crave.cnet.co.uk/gadgets/0,39029552,49305387,00.htm
Edit: This link might be more topical - and more factual!
"Public donates to UW scientist to fund backward-in-time research"
http://www.seattlepi.com/local/319367_timeguy12.html