Didn’t card readers back in the 50s and 60s use a vacuum to pick cards to send through the reader?

And there I was going to say you wouldn’t want to use a green tie wrap on power cables, as green indicates ground, and you might short your power to ground. ;-)

And there I was going to say you’d best not use green zip ties on cables carrying power. Green indicates ground, and green zip ties could short your power to ground. ;-)