quantum universe

Scientific American had an interesting article about the way the universe works.
The suggestion is that the universe works like one huge quantum particle - the present is defined by the sum of all of the possible histories. So when we have scientists debating over which theory is correct in a sense they both are - it is just a matter of which theory is the stronger wave length.
What is also interesting is than various ways of observing the universe may have an effect on how the history resolves itself. Strange eh?