“If you have an apple and I have an apple and we exchange apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas…… George Bernard Shaw……. What if you see this statement along with this idiom, “A rotten apple spoils the barrel”?.... Ideas are contagious and have no antidotes except high reasoning power that is rare………………..