Scouring the Internet for an answer to a complex question is not only frustrating but often futile. Asking a search engine where to take your next vacation or what film you might enjoy often results in a deluge of useless, impersonal data. Finding the “right” answer is like hunting for the proverbial needle hidden somewhere in a thousand haystacks. In A Haystack Full of Needles, author and venture capitalist Jim Hornthal explores groundbreaking new approaches to discovering useful insights buried deep within our complex and noisy datasphere. Hornthal introduces us to innovators who are pushing the edges of data science and data visualization by applying the principles of pattern recognition to isolate relevant signals in the noise. Their efforts will have enormous implications for the way we practice medicine, discover music and movies, and even identify our future significant others.