"Why is the sky blue? Why is water wet?" -Ghostface Killah
Song: GZA f/ Killah Priest, Ghostface and RZA "4th Chamber" (1995)
Ghostface ponders the mysteries of the natural world in this line, comparing Judas' betrayal of Jesus to other unknowables, such as the reasons the sky is blue and water wet. Except that water being wet is kind of a tautology-water is liquid by definition, so water being wet is true by definition. The sky is blue because of some basic scientific principles-air molecules act as prisms, and blue light scatters more from them because waves of blue light are shorter than other colors in the spectrum. The more you know.