WANDERERS AND SETTLERS
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civilized lives. Our lifestyle complicates our relation to the environment and to one
another.
First, serious health problems arose with life in cities. Famine could easily strike
since, despite the best planning, a drought or flood could destroy all the food
available in a particular region. The limited abilities for transportation often meant
that little food could be imported. In contrast, hunter-gatherers faced with natural
disaster could move on to other hunting grounds. Agricultural people, though, felt
compelled to stay, for two main reasons. First, they believed that one day the land
would be productive again, and so they stayed to prevent anyone else from taking
it over. Second, most other nearby land suitable for farming was already taken.
Good farmland is a precious and limited commodity. To find new land, farmers
might have had to journey a long distance. Lacking the skills to hunt and gather
along the way, many would have perished on the move. Farming peoples stuck out
the hard times and, consequently, many died where they stood.
Ironically, another health problem was poor nutrition. The hunter-gatherer
almost naturally ate a balanced diet out of what nature provides. In contrast, civi-
lized people chose what they wanted to eat rather than have nature choose for
them. They often started to go heavier on the meats, avoided certain roots and
vegetables, and devoured sweets. Our ‘‘sweet tooth’’ derives from our body’s
requirements for carbohydrates and fats. For hunter-gatherers, concentrated sugars
are limited and rare in the wild. Agricultural people, however, could reproduce and
consume sugars in large qualities, unaware of how obesity risked health and rotted
teeth.
Contagious diseases also threatened civilized society. Hunter-gatherers lived in
small groups that wandered regularly. Their contact with other groups of people
was brief. In contrast, cities opened themselves up for illness, encouraging close
and regular contact with travelers and traders from other communities. Widespread
outbreaks of disease, called epidemics or plagues, regularly devastated human
populations. Some epidemics spread by water (dysentery, cholera, typhoid), some
by human contact (measles, smallpox), some through fleas and lice (typhus, bubo-
nic plague), and some through the air (influenza, pneumonia). We know now that
the causes of all these (as explained in chapter 11) are microscopic bacteria and
viruses, which live all around and on us. Harmful germs flourished as civilized
people lived in increasingly large groups that dumped their waste all around them.
Up until a few hundred years ago, few people knew this or cared much about
cleanliness. For instance, until recently, more soldiers died of infections than
enemy attacks during wars. Ignorant of the real causes of disease, civilized people
could often do little more than suffer through them.
Another negative consequence of civilization, for half the human species, is an
increase of sexism. Sexism is the belief that one sex (usually the male) is better
than the other (usually the female). From birth, we separate humans into these two
groups, male and female, with that common first question, ‘‘Is it a boy or a girl?’’
Sometimes, physical or genetic irregularities complicate the answer to that ques-
tion. Regardless, all societies set expectations about gender behaviors. They use
both custom and law to define how individuals should express masculinity or femi-
ninity. Studies by modern social scientists and historians suggest that differences
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