I loved Permutation City. Have you read anything of the Orthogonal series by Egan? The Clockwork Rocket bent my mind and feels like harder sci-fi still.
Yeah, agreed, the same goes for "dichronauts". Sci fi so hard it cuts diamonds.
I read almost everything Egan published. While I love his work dearly, I've had very poor success with introducing people to his "alternative physics" stories (where he takes some law, flips a sign somewhere and rolls with the consequences [])... it's TOO hard. Not everyone likes a sci fi book that requires readers to follow along with pen and paper. So I always first recommend Permutation City, or maybe the short story collections such as "axiomatic"...
I read almost everything Egan published. While I love his work dearly, I've had very poor success with introducing people to his "alternative physics" stories (where he takes some law, flips a sign somewhere and rolls with the consequences [])... it's TOO hard. Not everyone likes a sci fi book that requires readers to follow along with pen and paper. So I always first recommend Permutation City, or maybe the short story collections such as "axiomatic"...
[] https://www.gregegan.net/DICHRONAUTS/00/DPDM.html