Smart is either illusion or a start of mind we posses e.g. clarity to understanding of things. Every person in this world excluding mental illness knows at least a thing or a few personally than another individual because of experiences and knowledge we gain through out our lives. Constant repeat of things irritates and breaks a person spirit and soul leading to malfunction or reaction to things and every single adult person in this world has gone through this in their life time. Flexibility and giving points of rejection or acceptance relieves and keeps us going with few breaking and many success in our lives.