The point about central Alt vs corner Ctrl is important, and it's unbelievable how Windows and Linux have messed this up. A primary modifier right beside the s

The point about central Alt vs corner Ctrl is important, and it's unbelievable how Windows and Linux have messed this up. A primary modifier right beside the space bar is incredible because the thumb is the strongest digit, whereas the pinky is the weakest (on the hands)―and shares a tendon with the ring finger. It's doubly great with a big bottom row like on MS Natural keyboards: you just mash these big blobs which are right under your thumbs, instead of aiming for minuscule keys in the corners with your most pathetic fingers. Macs have Cmd as the primary modifier, located on both sides right beside the space bar. Apps use Cmd for shortcuts―while Alt and Win keys aren't free to remap for most programs. So Mac users had this experience for decades now, and in the meantime afaik Windows and Linux haven't even attempted to correct the mistake. (A bit ironic how MS keyboards' layout works best on a Mac.)