It decreases the reliability of the hypothesis and can sometimes falsify it completely. An enumeration requires testing all instances in the group. The questionable cause fallacy is arguing that just because event B follows event A, event A is the cause of event B. 8. Correlations are connections between different events. They can be positive or negative.
Causal relationships exist when one event produces another.
All causes are correlations, but not all correlations are causes. A sufficient cause is one that, all by itself, is enough to produce a certain result. A necessary cause is one that is required to produce a given effect, even if it's not sufficient by itself to bring it about. A contributory cause is one that makes a certain result more likely to happen. Icy roads are a contributory cause of traffic accidents.