 If there are no latent common causes, so that the true causal structure on \(\bV\) is represented by a DAG \(\bG\), then it will always be possible to discover the complete causal structure using interventions. If we can only intervene on one variable at a time, we may need to separately intervene on all but one of the variables before the causal structure is uniquely identified. If we can intervene on multiple variables at the same time, we can discover the true causal structure more quickly.