Khi m\u1ed9t s\u1ef1 v\u1eadt hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o \u0111\u00f3 tu\u00e2n theo m\u1ed9t chu k\u1ef3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c th\u00ec ch\u00fang ta s\u1ebd c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng ki\u1ec3m so\u00e1t h\u01a1n so v\u1edbi nh\u1eefng s\u1ef1 v\u1eadt hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o \u0111\u00f3 v\u1eadn \u0111\u1ed9ng m\u00e0 kh\u00f4ng theo b\u1ea5t k\u1ef3 m\u1ed9t quy lu\u1eadt n\u00e0o v\u00e0 t\u1ea5t c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p ch\u1ec9 l\u00e0 kinh nghi\u1ec7m l\u00f4 \u0111\u1ec1<\/strong> m\u00e0 th\u00f4i. \u0110\u00f3 ch\u00ednh l\u00e0 c\u00e1i kh\u00f3 c\u1ee7a l\u00f4 \u0111\u1ec1 x\u1ed5 s\u1ed5 v\u00e0 ch\u00fang ta ph\u1ea3i \u0111i t\u00ecm c\u1ea7u l\u00e0 v\u00ec v\u1eady.<\/p>\n