Shibboleth

There's always something interesting going on in the central space at the Tate Modern; this time,a serious crack or rift from one end of the floor to the other [some 100 meters].How Doris Salcedo managed to persuade them to let her ravage their floor I have no idea,nor how she actually made the crevice,nor what it signifies,but it did seem to make everyone smile,a laudable achievement for any art-form,I think. It's called "Shibboleth",or,if you trace your family from the half-tribe of Efraim, "Sibbolet".