Exact. We could say it and it would be also wrong and silly. Because correlation is not causation necessarily, and a third actor (ehum... alcohol, drugs) could

Exact. We could say it and it would be also wrong and silly. Because correlation is not causation necessarily, and a third actor (ehum... alcohol, drugs) could be creating that increase in mental illness. How many people that "does not have a pet cat" is schizophrenic?