If it looks like a duck...

Posted by Cliff Bowman on October 01, 2008 at 14:07

I'm confused about the origin of the duck test: "If it looks like a duck, walks like a duck, and quacks like a duck, it might just be a duck."

Some websites attribute this to Walter Reuther, the US labor leader who lived from 1907-1970, while others attribute it to James W. Riley, a writer who lived from 1849-1916.

Could anyone sort this out, please?