When an accident involves many people and when its consequences are many
and serious, we speak of a disaster. Disasters have the same causal fac-
tors as accidents: they differ from accidents by the gravity of
consequences, not by causes. The action of a single individual may
result in thousands of deaths and huge financial losses. The metal
fatigue of a screw may, by a chain of events, cause an explosion killing
hundreds or lead to a break in a dam and a devastating flood. The fact
that minor and unpredictable acts can lead to disasters is im- portant
because it allows us to predict that the years to come will bring with
them more disasters with ever more severe consequences. The density
ofhu- man populations is growing. By the year 2025 some four fifths of
the world's population will be living in urban settings. An explosion or
a gas leak in a densely populated area will cause incomparably more
damage than a simi- lar event in a rural area. Modern technology is
immensely powerful (and its power is continuing to grow) and can be used
in a disastrous manner. Ag- gression is just as possible now as it was
in the past, but the tools of aggression are vastly more dangerous than
ever before. This book, edited by Johan M. Havenaar, Julie G. Cwikel,
and Evelyn J. Bromet, is therefore very timely.