When the number of factors coming into play in a phenomenological complex is too large scientific method in most cases fails. One need only think of the weather, in which case the prediction even for a few days ahead is impossible. Neverthess, no one doubts that we are confronted with a causal connection whose causal components are in the main known to us. Occurrences in this domain are beyond the reach of exact perdiction because of the variety of factors in operation, not because of any lack of order in nature.

Summary

This quote suggests that when a complex phenomenon involves a large number of factors, it becomes difficult for scientific methods to accurately predict outcomes. The example of weather forecasting is given, where even a few days ahead prediction is deemed impossible due to the multitude of factors at play. However, it is acknowledged that there is a causal connection in these occurrences, and we have knowledge about most of the causal components. The limitation in making precise predictions in such cases is not due to disorder in nature, but rather the intricate interplay of multiple factors.