In a world altered to its depths by human consumption, what will endure? Kristan Horton and David Armstrong Six’s two-person show “If by Dull Rhymes” seemed to propose that castoffs from our sinking ship have a salvageable future even if we don’t. Proliferating commodities provided the material conditions and inspiration for works of literally wasteful beauty, whose elegiac yet playful constructions craftily forecast human obsolescence.

Armstrong Six’s delicately colored freestanding assemblages made of plaster, cement, steel, and other materials conjured an undersea garden growing out of ruins.