@Daniel:
You’re attacking the wrong argument. Just look up the electron double-slit experiment. (http://en.wikipedia.org/wiki/Double-slit_experiment) Its not only about the observer effect, but how the probability that you say doesn’t exist causes interference to occur unless an observer is present. The observer is the one who collapses the probability wave down to a deterministic bayesian value.
It sounds like both you and the author of this blog do not understand Schrodinger’s cat.
You’re equating perceived probability with physical probability, and this is false, when either you or anyone else ignores that distinction.
However, your whole argument depends on a deterministic universe. Research quantum mechanics; we can’t really say that we have a deterministic universe, and physics itself can only assign a probability at a certain point.