What grid are you talking about? Are your eyes decoding 12 columns of information? Or is it just nice to have two things aligned with each other? I suspect it's

What grid are you talking about? Are your eyes decoding 12 columns of information? Or is it just nice to have two things aligned with each other? I suspect it's the latter. And again, that has absolutely nothing to do with a 12 or 16 or xx grid.