I was a computer science grad student in 1984, where we used dozens of VT100 terminals connected to a VAX 11/750 (32 MB of RAM and a huge 300 MB, multi-platter Eagle disk drive), but that's a whole other story... That year, the CS department bought a Macintosh 128k. I was pretty fascinated with the bitmapped display, but the first time I used it, I couldn't figure out the mouse. I'd click the button, and nothing would open. I'd try to click the button softly, then really wham on it... no difference. I remember when I finally got frustrated enough with the damn thing that I started repeatedly clicking it until something happened. I had just discovered double-click 🙂