Theatre reviews: Atlantis Banal, Traverse Theatre, Edinburgh | Salt/Bleach, Assembly Roxy, Edinburgh

WHAT is art, then? It seems like a question for adults, and perhaps for that particular kind of adult who gives a damn about culture and its definitions; but it’s one of the many virtues of Shona Reppe’s latest family show that it demonstrates how that same question can amuse and intrigue children of almost any age, bringing the generations together in an entertaining and strangely exhilarating hour of enquiry about where play ends, and art begins.So we enter the “pop-up gallery” in which the show is set, sit round on four sides of the space, and are welcomed by two museum staff dressed in Mondrian colours, a gift-shop manager played by Reppe, and her assistant Graeme, played by Tamlin Witshire. There’s an introductory lecture by a female expert, also hilariously played by Reppe; Atlantis Banal, so we’re told, is a remarkable artist, born on an island somewhere between Scotland and Norway, struck by lightning at an early age, and raised by an aunt who was a sardine packer, and an uncle who was a dry cleaner.