Do there exist things immediately in front of us that we are fundamentally incapable of perceiving? When a bird looks at a computer screen, it can see the computer and what's going on, but it cannot understand any of it. The bird doesn't look at the screen and think to itself "What's going on there?" The bird looks at the screen for only a split-second, and doesn't think anything of it. To the bird, the computer screen is just another flat plane within his local environment. The bird is fundamentally incapable of perceiving the computer screen. There must be things that humans are fundamentally incapable of perceiving. What exactly is consciousness, and do there exist non-physical beings? At least currently, we cannot scientifically define consciousness, and we cannot scientifically prove the existence of a non-physical world of consciousness.