Actually the floppy disk made perfect sense when I first saw it: "we're going to do something involving the floppy disk, and there's a put-onto arrow superimposed over it" (the load-file icon had a take-off-of arrow). It makes less sense now, but only because computer storage no longer has a single, iconic (heh) form factor.
ZXCV is positional, [C]opy having a nice mnemonic is more of a happy coincidence than a design decision in it's own right.
> ZXCV is positional, [C]opy having a nice mnemonic is more of a happy coincidence...
ZXCV is actually half positional/mnemonic, half graphical-as-letters, a bit like old-fashioned smileys: X for cut looks like opened scissors, and V for insert looks like the downward-pointing “insert here” arrow-like mark editors and teachers use(d?) to scribble onto others’ texts.
ZXCV is positional, [C]opy having a nice mnemonic is more of a happy coincidence than a design decision in it's own right.