Or you're just asking the wrong question. "Have you stopped beating your wife yet?"; "What is the sound of one hand clapping?" Our language has the ability to frame nonsensical dichotomies.
Or to put it another way, perhaps you're asking for a three dimensional array, but you want its contents to only have two-dimensional qualities. Or you want force and acceleration, but no mass.
Or to put it another way, perhaps you're asking for a three dimensional array, but you want its contents to only have two-dimensional qualities. Or you want force and acceleration, but no mass.