たいもCE0266わ22 Le
ーー WAY LIL UmmanS can often
Judge what a thing is without being directly told. It iS most
commonly phrased like this: っ人AS fit looks like a duck。 swime Hike a
duck and quacks like a duck。, 1 is probably a duck.“" \ou do not
need each duck to have a label that SaYS。 “duck.” ドニー ot YOH Can
use the animal's outer appearance to realize what it is. While HO One
is exactlY certain who invented the “duck test,” or why Aver used to a
duck rather than some other animal。 its first aDDearance seems io
(@)
have been in 1950. At that time。 a United States amhaeeada。 14。
