Causal loop: Sick//Healthy Causal loop: Sick//Healthy %da%a9%da%86%db%8c%da%a9%da%a9%d9%88%d8%b3%da%a9%d9%84%d8%a7%d9%86%da%a9%d8%a7%db%8c%d8%af%d9%86