Complex sentence: This thesis was accepted by Karl Popper, leading him to reject naïve falsification, in favor of a'survival of the fittest' view in which the most falsifiable scientific theories are to be preferred.
Split into simpler sentences: This thesis was accepted by Karl Popper, leading him to reject naïve falsification. Instead, he favored a'survival of the fittest' view in which the most falsifiable scientific theories are to be preferred.