Artist David Hollowell stenciled and painted whimsical landscapes and creatures onto the 20-foot-tall walls of an empty room in his family’s home almost every day for seven years. The mural is a grand optical illusion that has garnered millions of views on TikTok. It is also incomplete. Hollowell, a former art teacher at UC Davis, fell off his roof three years ago and fractured his skull. The incident led to aphasia, a brain disorder where the area of communication was damaged. Earlier this year