We live like we know reality. But our perception of what is real, is actually just a filter of reality. What we see with our eye is just a portion of what is really going on out there. Of all the wave-lengths, we can only see a fraction of them. And even though we can take x-ray photos, we still see these photos through our own eyes, so it’s really just adding a filter on top of another filter. We can’t hear anything below 12 Hz, but that doesn’t mean that sounds below 12 Hz don’t exist. So parts of reality are at all times hidden to us. A fly does not perceive reality the same way as humans, but that doesn’t mean that the fly’s reality is any less real than ours, it’s just a different perspective.