What the Meaning of ‘Is Is’ Is

Redundant is almost always hurled as a negative epithet, but repetition can be an effective rhetorical device. Shorn of all redundancy, Shakespeare’s “most unkindest cut of all” would be pretty vanilla, and the ad slogan “Raid Kills Bugs Dead” would become the ho-hum “Raid Kills Bugs.” Meanwhile, Gertrude Stein’s “A rose is a rose is a rose is a rose” would have to be completely erased because the quotation is nothing but redundancy. (Completely erased is redundant as well—something is either erased or it isn’t. But I felt I needed the emphasis provided by completely.)

http://chronicle.com/blogs/linguafranca/2011/09/11/what-the-meaning-of-is-is-is/?sid=wb&utm_source=wb&utm_medium=en