The law of inequality of development in the evolution.The law of inequality is manifested by the universality of the fact, that each living functional system consists of individual components, whose momentary evolutive state, as well as their evolutive trends and speeds are different.The fact itself depends directly from the lack of direction of the elementary changes of heredity .The law is to be considered as one of the eight general laws of evolution which form together a whole.It is pretended that (...) these laws are applicable to all levels of the process of the historical development of life, including also all features of the human life.La ley de la desigualdad del desarrollo en la evolución.La ley de la desigualdad del desarrollo se manifiesta por la universalidad del hecho de que todos los sistemas funcionales vivientes se componen de las partes cuyo estado evolutivo momentanei asi como tendencias y velocidades evolutivas son distintas.Este mismo hecho depende directamente de la falta de la dirección hacia un determinado fin en los cambios elementales de la herencia .La ley debe ser considerada como una de las ocho leyes generales de la evolución, las cuales forman un conjunto indisoluble.Se pretende que estas leyes son aplicables a todos los niveles del desarrollo historico de la vida, incluyendo todas las manifestaciones de la vida humana. (shrink)

Some scientists believe that although evolutionary theory is explanatory, it does not have, in contrast to the theories of physics, any predictive power. This raises the question of its testability. The analysis given shows that there are good reasons to claim the unpredictability of evolutionary events; nevertheless, the evolutionary theory has potential predictive power. It is argued that the difference between biology and physics lies not in the predictive power of the theories involved, but in the different weight which is (...) lent to the forecasting of particular events in these sciences. A second source of confusion derives from the ambiguity of the term 'prediction'. In order to define 'prediction' for cases in which the term is used to refer to a part of testing procedure, the reference to the time-point "now" is quite irrelevant. Prediction of unknown observational data is sufficient for testing a hypothesis, but such prediction may or may not be identical with forecasting of future events. Different factors that may cause particular difficulties met by biologists in forecasting future events are analyzed subsequently in the second part of the paper. The conclusion is drawn that although particular cognitive situations limiting the ability of forecasting are very frequent in biological sciences, the claim about the peculiar logical status of biological theories is not thereby justified. (shrink)