There were moments of theatrical magic, as when their gold jackets created a dance of sparkles on the walls, and moments when the technical jockeying seemed inadequate to Ms. Sperber's vision.
At the Guggenheim, with the dancer-choreographer Jonah Bokaer (who spent most of this decade dancing in Mr. Cunningham's company), Mr. Cunningham demonstrated how to use chance (shaking the dice and letting their even or odd numbers determine his binary choices) while creating a dance on a computer.
Dixon Place, the performance lab, will work with 8- to 12-year-olds on Sunday to create a dance theater piece that they will present that day.
In "Sight/Unseen" Jeremy Nelson creates an ever-shifting urban landscape, and in "Wythoff's Array," he creates a dance based on mathematical accumulations.
The choreographer Donna Uchizono had the daunting task of creating a dance based on "Awakenings," Dr. Sacks's classic 1973 book about sleeping-sickness patients who had been frozen for decades in a trancelike state before being awakened by a new drug.
Tan, who finished his Ph.D. at Oxford last year, created a dance based on his thesis, "Sperm competition between brothers and female choice".
The company was established in 1947 by Rose Repetto, who created a dance shoe workshop on the advice of her son, the choreographer Roland Petit.
And Emma Ware, a research assistant at the Centre for Addictions and Mental Health in Toronto, Canada, created a dance around her research on pigeon courtship.
The Dutch duo was quick to acknowledge U.S. companies that are putting on more textured festivals and events, including Detroit's Movement festival, which van Straalen sees as "choosing to stand for something," and Sleep No More and Fuerza Bruta, both of whom Jansen said ID&T would like to work with on creating a dance music version of their events.
