immaterial appearance… light construction… lightness… transparency… atmospheric effect… glass reflection… non transparency using glass… weightlessness… light… extreme thinness… abstract… formal austerity… rigor…immateriality… prefabrication… utility… efficiency… exclusion of everything that is accessory… purity… neutrality… no limits between inside and outside… absence… void… silence… fluidity… not be… absence of architect… nothing… erase, try out and become imperceptible…