The average person knows less about quantum mechanics than they do about what-ifs. That is, to say, much, much less. But no matter, both are discussed and employed throughout Nick Payne’s relatable, sweet and heart-wrenching play Constellations. The Wyly’s Studio Theatre, 2400 Flora St., transforms into parallel universes within a gigantic multiverse (which contains every possibly outcome) through Oct. 9. This two-person play has both London and Broadway smitten, and now Dallas can experience the raw intimacy, excitement and challenges of communication between a beekeeper and a physicist. Witness, as most of us have in our own brains, the replaying of events and the examination of “what would’ve happened if” over the course of several scenarios as two awkward souls connect, and disconnect, and connect. Tickets start at $20. Showtimes vary; visit attpac.org.