The specious material series explores the potential for a material to embodied multiple different materialities. An "authentic" material, here the rock, is digitalized, manipulated, physicalized in different ways and re-digitalized. Through the reciprocal process of moving between the digital and physical realm, the material starts to lose part of its original qualities while gaining new ones at the same time. This series explores to what extent could the manipulated rock still keep the feeling of rock-ness, and at what moment does the "fake" rock started to achieve its own authenticity. The photogrammetry of the open space explores how multiple scanning of the site can turn the misalignment of the algorithm into a space-making tool. The scan reads as-built from the top, but when viewed from perspective, one would discover the unexpected and interesting space emerging from the originally flat ground because of the misalignment during the scanning process. The glitch of the software adds another layer to the banal everyday space and open-up new spatial imagination.