Human Versus Infected
I Am LegendThis flow traces the conflict from simple survival defense toward a morally unstable war between incompatible populations.
increasing
Bearing strength in each event
decreasing
Binary World

Man Against Monsters
Initial Division
Robert Neville understands himself as human and the nightly attackers as vampires.
Moral Simplification
This division makes killing psychologically possible because every enemy appears to be an existential threat.
Hidden Complication
Living infected people and psychologically transformed victims do not fit the simple categories.
Scientific Complication

Many Forms of Infection
Biological Difference
Robert Neville distinguishes living infected people from bodies animated by the bacillus.
Psychological Difference
He also identifies fear, belief, and trauma as causes of apparently supernatural behavior.
Ethical Pressure
The more he understands, the less comfortably he can treat all infected people as identical monsters.
Political Reversal

The Enemy Reclassified
New Majority
The organized infected society defines old humanity as the dangerous minority.
Collective Action
Its violence is justified as survival and social hygiene.
Final Conflict
Robert Neville’s former moral position is returned to him by a society that now has the power to enforce it.
January 1976
late 1976
January 1979