If some creature more-than-human chose to disguise itself as human, how was he to penetrate its disguise, or suspect there was one? If such a creature did not wish to be suspected, would it not remember to cast a shadow, leave footprints, eat bread and cheese? Might it not chew spice-leaf, spit at a lizard, and remember to imitate the reaction of a mortal who forgot to put on his sandals before stepping on hot ground?