Why has Uncle Tom’s Cabin survived—and thrived?

Anonymous Patron writes “Over @Slate, Stephen Metcalf asks Uncle Tom’s Children – Why has Uncle Tom’s Cabin survived—and thrived? We have here an interesting puzzle. How has Uncle Tom’s Cabin survived, and thrived, if it proved so offensive to the 20th-century aspirations of the African-Americans it helped liberate in the 19th? Why isn’t Uncle Tom’s Cabin like Wittgenstein’s ladder: Once climbed, it is obsolete, and we ought to throw it away?

The answer, he believes, can be found in an essay from 1978 by Jane Tompkins, a prominent feminist literary critic”