Many people mistake correlation for causation, which is a logical fallacy. Take immigration and birth rates as an example; many analyses confuse the two. But what is the actual situation? Europe's birth rate has been declining for a long time, and this is not a recent development—it has been ongoing for decades. You can't blame recent population movements as the main cause; the underlying economic and social factors are much more complex. The relationship between birth rates and migration is far from straightforward. To truly understand demographic changes, you need to look at deeper factors such as economic cycles, education costs, and living pressures, rather than simply pointing to a single variable. This is crucial for understanding global macro trends and long-term economic patterns.