Frog Design had traveling exhibit called Frog Art. The gallery on my college campus ran the show. There was a NeXT cube on display and turned on. There was only a login screen. One could try to login and when the credentials were rejected. The login window jogged left to right and erased the entries like an etch-a-sketch. That completely knocked my socks off. That pretty much inspired me with the notion that going forward we would only understand technology through analogy.