@Sven Groot:It is true by definition, correct, philosophy 101, but I'm not trying to be pedantic. Quantum physics says the universe always existed as both wave and particle, it's not dependent on observation, or life, as you asked. I can imagine the universe existing without life, but there's no particle to pass through one slit, there's multiple universes, potentials - no one is there to hear the tree fall - but the noise is there to potentially be heard.
It seems to me, the same, to consider the many potential parallel universes that I've read about more recently in articles about string theory as being the wave function and the parallel slits it may pass through in the aforesaid experiment as those possible universes, where the particular universe we collapse into existence upon observation is the slit that the particle goes through. This would not be 'random', according to most, but directed by the observer/observation. I've stated in this thread that my perspective is one of faith (don't read religion here, please) and cannot show demonstrable empirical proof. It is still worthy of being included in a scientific discussion. I'm not here to say science is wrong. I'm asserting the role of the observer as integral, not passive, to what we call reality. It seems intuitive to me that our place and function inside of time is the anomaly, we are alive, and that's the pivot point for reality itself. It most certainly is an existential perspective, and not a mechanical engineer's formula.
@evildictaitor:The link 'here' is broken. I'll take a look when we can find it. I will point out that the text says "in theory", and not in fact, going back to the 'definition' Sven called out. I really am not trying to 'win' my point with a cheap trick, but it is true that we cannot ever separate the scientist from the experiment - a notion that is undervalued in this thread. It can most definitely be asserted that the observation of recorded experimental results of the photon collapsing to pass through one slit, days after the recording took place, is the very observation that collapsed the wave function into the particle for the record. As you can picture, this is now an atemporal connection - a spooky action at a distance (time is distance), hence my view of life as a pivot point in spacetime that defines our universe. I cannot take credit for the idea, I did read it, but I cannot recall where and of course it was not in a scientific journal. You say it has been experimentally verified that I'm wrong but I don't see the source yet.
We are quantum entangled with the experiment, results, and each other - atemporally connected.
You can wave off my opinions, but you cannot drain them of meaning.