In this post on the CR blog, Lee Kelly draws a great analogy between the critical rationalist view of science and Darwinism, contrasted against the conventional, inductivist, view of science which is more analogous to Lamarckism, an obsolete theory:
“Scientific theories are like mutations. We do not need to specify a mechanical rule to create new theories, but merely standards of criticism (selection pressures) to subject them to: logical consistency, falsifiability, problem-solving potential, simplicity, explanatory power, and possibly others. The ecological niche we create for our theories should be one designed to weed out error and falsehood, irrationality and redundancy. Induction, concerned as it is with the origin or source of theories, serves no purpose in such a critical discourse.”
Unapologetic Skepticism 