Sofi:  How many senses do worms have ?
Ian: They have _ two _ . Smell and touch . Why ?
Sofi: So ... they live without any ability to see or even know about light , right ? The notion of light to them is unimaginable .
Ian: Yeah .
Sofi: But we humans ... we know that light exists . All around them ... right on top of them ... they can not sense it . But with a little mutation , they do . Right ?
Ian: Correct .
Sofi: So ... Doctor Eye ... perhaps some humans , rare humans ... have mutated to have another sense . A spirit sense . And can perceive a world that is right on top of us ... everywhere . Just like the light on these worms .