- (EVOLUTION) The idea that evolution
consists of many branching points and that an organism's future evolution
depends on previous branching points. This theory would predict that
evolution is unlikely to produce similar species on different planets.
It stands in contradistinction to convergent
- (LOGIC) The property whereby
a statement may be either false or true, its truth or falsity depending
on the actual state of the world. The statement "the paper in this book
is white" is contingent in that although it is in fact true, it is conceivable
that it might have been, say, pale green. Compare with necessity.
AND EVOLUTION OF LIFE