Zappi is the material that can do everything. It is an imagined omnipotent building material that (currently) does not exist. The name zappi was introduced by Thijs Asselbergs as the moderator on a debate on iron in the Beurs van Berlage in 1992. He challenged two professors, Eekhout and Oosterhoff, to envision their ideal building material properties and named it zappi. Since then zappi lived on as a sobriquet. Zappi symbolizes an attitude, a desire to create the optimum enclosure for mankind. It also represents progression. For an architect can only be truly innovative, when he is able to convince and engage clients, manufacturers, contractors and end users.