Hanh dong cua tham phan nay thay quen quen o dau do. Giong nhu dam luat su hay chinh tri gia chuyen mon noi lao an tien, dung nhung kien thuc hoc hanh de che dau cong viec lam an bay ba. Den khi viec do be thi co gang an may long trac an cua moi nguoi. Example: Bill Clinton choi bay choi bien chuyen bay ba voi Monica, den khi co bang chung hien nhien thi bao chua nay no...