People are considered to say nothing without cause and nothing happens for no special reason. One summer day my family went to visit my grandma. On our first day me and my dad decided to go fishing to the nearby pond. We got there, took our fishing rods and started fishing. So, we were sitting there in hope to fish something all day long . However, we got nothing, although there was always a lot of fish before. We came back home being upset and disappointed. In the evening I came up to my grandma and asked her about what had happened. Then granny told me that somebody poured out a fertilizer into the pond and after that all the fish perished. As a matter of fact they failed to learn who was that.
This story proves that nothing happens for no special reason and there is no smoke without a fire.