Dance students Faith Hidenfelter β28, Liz Moronski β26, Sitara Takyar β25, Ariel Mayer β26, Ava Dobro β26 and Claire Mental β26 watch as David Dorfman Dance alumni Joseph Poulsen, Paul Matteson, Aya Wilson and Jenna Riegel rehearse βLightbulb Theory,β a 2004 work being revived 20 years later, in the second-floor dance studio at Crozier-Williams. Dorfman, a professor of dance at Conn, and the company alumni will perform the piece at the 92nd Street Y in New York City on Feb. 8.