Meaning of mask is something that serves to conceal. In this world we, human, have to wear the mask, unless a person is a true hero. I, myself, also wear a mask to conceal my weakness. A true hero never wears a mask. They are not afraid of criticisms about their mistakes. A hero can learn from his or her mistake and move on to their lives. Their innocent mind can be revealed at all time as "Open -24 Hours." We don't regard wearing mask as a liar, as long as it's in small degree. Masks cover all range of things. Sometime, people pretend as they are smart as well as stupid. There are advantage and disadvantage of wearing a mask. When people don't reveal their problems, they cannot get criticisms, which would make their lives easier. But sometime bad incidents accidentally happened, and it's worth hiding. Sometime...