Max Tegmark has published anthropic arguments for why we must find ourselves in a 3+1 dimensional universe.
Greg Egan’s Dichronauts is set in a 2+2 dimensional universe, a condition Tegmark dismisses as ultrahyperbolic. Egan also has a rigid-body simulator using physics from that universe. It does seem rather unstable.
Max Tegmark has published anthropic arguments for why we must find ourselves in a 3+1 dimensional universe.
Greg Egan’s Dichronauts is set in a 2+2 dimensional universe, a condition Tegmark dismisses as ultrahyperbolic. Egan also has a rigid-body simulator using physics from that universe. It does seem rather unstable.