The language acquisition process is suggested to be a process of selection and cumulative reduction from the language of more experienced (i.e. older) individuals. The population structure ensures that the approximation of the language learner results in a common language that is stable under normal conditions. Language is described as a “stasis” between constructive and eliminative Reduction.
~
JOHANSSON, Christer, 1996. Construction as reduction. Dept. of Linguistics Working Papers. Online. 1996. Vol. 45, p. 79–92. pdf 
KOSLOW, Arnold, 2002. Laws, explanations and the reduction of possibilities. In: Real Metaphysics. Routledge. ISBN 978-0-203-16429-7.