It’s not easy being straight. Like watching Sisyphus roll his rock up the mountain, “Linearity” shows the fascinatingly endless task of imposing straightness on an irregular world. With rolls of bright adhesive tape, two ambitious and energetic dancers restructure their environment by creating straight lines in the unlikeliest of places. It’s as if the audience were watching a construction site. The dancers perform daring feats of precision and thrilling symmetry. Bit by bit, recognizable forms emerge on the ground and in the air. The movement language of “Linearity” is based on an extended dialogue between straight lines and luxurious curves and wiggles. How straight do we really want to be? How many curves can we handle? The choreography looks for answers to questions that end up being surprisingly personal.