A recent experiment by researchers at ANU (Australian National University) into the quantum behaviour of particles seems to suggest that reality appears not to exist until it is actually measured. According to [Associate Professor Andrew] Truscott, the results mean that if you choose to believe that the single atom really did take a particular path (or paths), then you have to accept that a future measurement is affecting the atom’s past.
Some background reading before my thoughts …
The usual way to explain it was by analogy; this was how the idea was introduced to you as a child. Imagine you were travelling through space and you came to this planet which was very big and almost perfectly smooth and on which there lived creatures who were composed of one layer of atoms; in effect, two-dimensional. These creatures would be born, live and die like us and they might well possess genuine intelligence. They would, initially, have no idea or grasp of the third dimension, but they would be able to live perfectly well in their two dimensions. To them, a line would be like a wall across their world (or, from the end, it would look like a point). An unbroken circle would be like a locked room.