“Can we ever be sure that the experiential world is not an illusion?” I have always been fond of the phrase “perception is reality.” I believe that what we perceive is real, yet I believe it is an incomplete image of what is really there. Our senses have evolved for survival. For that reason, we see in only certain wavelengths and at limited ranges, we hear only certain frequencies, and we smell and taste only a certain range of scents and flavors. I believe there is a whole world beyond what we can perceive, even beyond what we can imagine. String theory suggests that there exist 10 or more dimensions yet because we only exist in three dimensions it is nearly impossible for us to even imagine what those other dimensions might look like. Just because we cannot perceive them, does that make them any less real? I don’t think so, I just think humans have been limited in their physical capabilities by what evolution deemed necessary for survival. I am very exited to see what science discovers about the imperceptible aspects of the physical world in the years to come.