Kanwarpreet Grewal has a wide range of interests including philosophy, physics, the history of science, writing and poetry. His philosophical interests stem from two questions that bother him incessantly, "How do we know what we know?" and "How can we measure what we know and what we do not know?" Kanwarpreet is a computer engineer who lives in Delhi with his wife and two children. His previous books include "The Parched Well," a book of poetry, and "Shadows of Lost Time," a collection of short stories.