... thoughful people seem increasingly to agree
that our society -- indeed, world society as a whole --
has entered into a crisis of unprecedented
magnitude, and with potential consequence too horrible and
irreversible to contemplate --
(1) accelerating technological alteration of environment,
(2) depletion of world's resources,
(3) proliferation of weapons,
(4) and effective shrinking of the
social brain
that controls it ...