When we were young, we believed when we grow older, we will have the answer to most questions. As time passed by, we had more questions than answers. As former US Secretary of Defense Donald Rumsfeld told us, “There are things we don’t know we don’t know.” Sometimes we ask a question. Rather than getting an answer, we end up with more questions. Philosopher Aristotle said, “The more you know, the more you realize you don’t know.” (Caution: This blog post is not meant for those who don’t like to think. If doing too much thinking is bad for your health, stop reading right now.)