Beware: Causal Relationships Between Variables Might Not Be What They Seem!
The article explores how causality relationships between variables can change when more variables are considered. In a three-variable system, causal links found in a two-variable system may disappear, making them seem false. However, these links could actually reflect real causality from the variables to each other. This means that non-causality in the three-variable system can be misleading, and the bivariate causal links may not be as spurious as they seem.