BizBash C.E.O. David Adler: Any Live Gathering is a Once-in-a-Lifetime Event: Event organizers need to shift their mindset and reconsider purpose, structure, and power dynamics at events, says author Priya Parker. It's all part of understanding the power of gathering. The first time I talked to Priya Parker we clicked. In her new book, The Art of Gathering, she says that smart event organizing, in all its forms, is a powerful tool that has been underrated and minimalized—feelings that I share.