This statement presents a novel expressive medium that the authors call Ambiguus tiles, which construct dual-view tile mosaics. While similar to wall and surface mosaics made with conventional tiles, Ambiguus tiles can be assembled and rearranged to create dual-view tile mosaics in any size and form. Fact vs. Fiction , a letter sculpture composed of 115 Ambiguus tiles, is presented here as an example of the creative possibilities for using Ambiguus tiles as a ready-to-use design material. As seen in Fact vs. Fiction , Ambiguus tiles are particularly effective in communicating social messages.