Soil pores create space in the soil that allows for root penetrability. He also assumed an enormous penetrability of the bodies. His work has focused on mechanisms of DNA repair and cell penetrability. This occurrence is called conceptual or cognitive penetrability. T is the half-life and P is the penetrability. To test conceptual penetrability, there were simultaneous and sequential judgments of pairs. The phenomenon of wishful seeing implicates cognitive penetrability in the perceptual experience.