Granger causality is preferred over regular causality definitions when :
1. The system is dynamic and observed over time. 
2. Influence between systems needs to be quantified.

University of Michigan - Ann Arbor

If there exists a system X, we ask if the data contained in X is sufficient to predict future states of X, or if there is a system Y that can help improve our predictions of X. If there is, then we say X is not closed.

Granger Causality

Slightly out of scope, but a very interesting read : 
[arxiv.org/abs/2002.02078](https://arxiv.org/abs/2002.02078) 

Learn Before

Related