Have you ever heard people say that common sense is not so common these days? What could be considered common sense, and what not? Have you ever wondered about that? Let's explore the answers to these questions, which you may find both common and uncommon at the same time. Common sense is sound practical judgment concerning everyday matters or a basic ability to perceive, understand, and judge that is shared by nearly all people. This definition is taken from Wikipedia, the common source of knowledge these days. It says that common sense is the ability to perceive, understand, and judge everyday matters, which is shared by nearly all people. So we can say that common sense is what is available to people, what is accessible to them, and their ability to perceive what is available to them. This ability is shared by others too. Humans are finite creatures. Their lifespan is smaller and finite compared to the universe. They can only perceive a sliver of reality, the universe, and wh...