Reddit reviews VAS: An Opera in Flatland: A Novel. By Steve Tomasula. Art and Design by Stephen Farrell.

You might look up Brian Greene and superstring theory. That film fumbles around for metaphors for how to explain the M-Brane theory, but I think TD is actually a fantastic rumination on interdimensionality and the weird influence one dimension might have on another, using inter and intratextuality as well as the weird influence audiences have on characters and vice versa. Youtube has a million different videos about superstrings, but changing the idea of time into a flat circle is just changing the perspective of one dimension from the perspective of the next one "up."

Try Tomasula's Vas, for more on dimensional perspectives, or the book that influenced it, Flatland: An Opera in Many Dimensions. Try to imagine how a world might look to people who live in two dimensions. It seems linear and normal, and like a world they might experience as we experience ours, but then imagine us, looking down on flat creatures living in their flat space. That's the way fourth dimensional beings would regard us, according to Cohle.