"Shibboleth" by Doris Salcedo, at the Tate Modern in London, consists
of a possibly treacherous crack in the gallery floor.
"As contemporary art often does, the giant crack in the floor at the
Tate Modern here inspires different responses from different people."
"'Shibboleth' takes its title from the Old Testament story in which
the ability to pronounce the word was used by the victorious
Gileadites as a test to identify members of the tribe of Ephraim who
were trying to sneak back into their home territory. Those who
couldn't say it correctly were revealed as Ephraimites and killed."