All #chess is #4dchess. If it was only two dimensional the pieces would just be flat discs on a plane with zero thickness and we wouldn’t be able to get a purchase on them with our hands to pick them up and move them. If it was only three dimensional we’d only be able to stare at the board in the opening position stuck in suspended motion for an eternity.
Kevin Boyd (he/him) @kboyd@phpc.social
spoilers for The Orville S1E11