Through history, architecture evolved from a bearing stack of spaces into a structural skeleton giving more freedom in matters of room-arrangement. Walls became part of the interior, a piece of furniture. If architecture evolves further from a skeleton within to a structural skin on the outside then the grid of elements that define a space, the floors and walls evolve from architecture to furniture...

XS, M, XL is a study in the twilight zone between interior and architecture; a 'virginal full space', a volume, comparable to the block of stone with which a sculptor begins and that ends up as his work of art. The inhabitant digs out his own living environment, like a mole digs its nest from a mass of dirt.