I'm gonna go out on a limb and say "pancake-shaped disk" is not only redundant (because all disks are pancake-shaped) but backwards (since actually it's pancake

I'm gonna go out on a limb and say "pancake-shaped disk" is not only redundant (because all disks are pancake-shaped) but backwards (since actually it's pancakes that are disk-shaped - pancakes are a special case of disks, which are really cylinders). Sorry, this is more fun for me than marveling at the photo. It is pretty cool though.