Not that I fully disagree, but this reply is of limited helpfulness. I don't think quantum phenomena can be ignored within the context of human body. I don't know what happens with double-slit experiments, how the sight of it is encoded in the body memory. Software developers have great tools for assuring and checking source code correctness, but the situation for meat-space bodies is very different in practice. Unless you live in some advanced techno-utopia with access to advanced medicine. I don't know where to look for help. I can't run fsck-brain /dev/brain on me.
From the point of view of quantum mechanics your body is very 'noisy'.
You only see quantum mechanical effects, like what you see in the double-slit experiment, in essentially undisturbed systems. That's why when you 'measure' which path the photons take, the interference pattern in the double-slit experiment fails to occur. Your body having lots and lots of atoms sloshing around at body temperature is analogues to taking measurements. It 'collapses' the wave function, if you pardon me using terminology from the Copenhagen interpretation.
