As it turns out, medical science shows that there is nothing physically dangerous or wrong with eating worms or grasshoppers. Eating them would not normally make people sick or otherwise cause physical harm. What is more, no obvious rule exists that leads to this gut-feeling behavior. No laws, church doctrine, school curriculum, or parental guides specifically address the issue of eating worms and grasshoppers. Yet, even without structured rules or codes, society clearly gives a consistent message about this.
Adults take the concept as being so fundamental that it is called common sense.
By the time children reach the age of ten, they have a pretty clear idea of what is right and wrong, and what is acceptable and unacceptable. These distinctions are learned from parents, siblings, extended families, neighbors, acquaintances, and schools, as well as from rituals like holiday celebrations and from radio, television, music, magazines, and many other influences. Unfortunately, the same cannot be said for being taught what kind of computing behavior is repugnant. Parents, teachers, neighbors, acquaintances, rituals, and other parts of society simply have not been able to provide influence or insight based on generations of experience. Information technology is so new that these people and institutions simply have no experience to draw on.