In his book, The Hard Thing About Hard Things, Andreessen Horowitz's (AH) co-founder Ben Horowitz doubles down on his veneration of John O'Farrell, and then adds some more. He's "the industry's greatest M&A negotiator", and "the greatest big-deal person I've ever known". "If you... faced your maker for your final judgement, as your fate was to be decided for all eternity, [and] you were granted a single person to negotiate on your behalf, who would you choose? If it were me, I'd take that Irish brother, John O'Farrell," he writes.