I live in unknowns Everything began at middle school. At that time, those was easy, I solved all mathematical unknown problems easily. After gratuated university, I turned back and I understood that I shouldn't choose the way. Because all unknown problems lead another one. The way is deep and infinite.if it is stable I would be okey. But no, it is neither stable nor comfortable. I try to find an exist at the way that make me be tired much. As a result, I lost the unknowns which engineering created.