Kriebs, Leiterman, Hunter, and Fain.
(from left to right)

Spacechanging as a metaphysical concept was first recognized in the summer of 1981 by the Yale Summer Special Projects Unit. Simply stated that theatre artists enter an "empty space", whip up some art, and then return to "empty". A space therefore is changed temporarily in the real time of space but permanently in the minds of the participants and audience

Spacechangers ... It's what we are ... What we do as theatre artists ... All of us ... All of the time ... Over and over and over again.