| and one button mice.
| While Jobs was off developing Next, Apple adopted 3d shading.
NeXT did it far earlier of course. NeXT used 4-intensity grayscale on its first machine (very tastefully) when most Mac was 1 bit black and white. The grayscale displays obviously didn't have any RGB phosphors, and were extremely clear for the time.
Take a look here and compare contemporaneous Apple/Amiga/Microsoft vs NeXT.
NeXT was 15 years ahead of competitors, both in UI and software architecture. Windows 95 was a low-end rip-off of NeXTSTEP UI, but at least they had the taste to rip off the best. Note the W95 close button. Note how Windows screwed up by putting minimize & maximize very close to the destructive close 'X' button. NeXT of course but the close button alone and the other menu on the other side.
| One he came back it's forced his developers to put a flat UI on the first iPhone.
iPhone wasn't flat until Steve was nearly dead. I have a very old iPod Touch that runs iOS 4.x. The UI is really good and nice looking, predictable, and fast and efficient. Better than my much faster iPad on 8.