Apple instigated the personal computer revolution with the Apple II, which was the first mass market personal computer as we know them today.
I think Apple would be more of an ordinary company without him--it would be much less audacious, daring and artistic.
A lot of people thought Steve Jobs was a CEO of Apple but he never was until he came back to Apple in 1997.
People who work on the user interface side need to have empathy as a key characteristic. But if you are writing device drivers you don't really need to understand humans so well.
The Macintosh having shipped, his next agenda was to turn the rest of Apple into the Mac group. He had perceived the rest of Apple wasn't as creative or motivated as the Mac team, and what you need to take over the company are managers, not innovators or technical people.
In fact when I first got my Apple II the first thing I did was turn it on and off, on and off, just because I had the power to do so, which I'd never had on a computer before.
I got bitten by the free software bug in February of 1998 around the time of the Mozilla announcement.
Working long hours being single helps because your time is yours. Once you have a family your time isn't all yours anymore. Most of the Mac team, we were in our mid-20's, most of us were single, and we were able to essentially devote our lives to it.
Being idealistic really helps you overcome some of the many obstacles put in your path.
I developed some unique software to public it on the web that I call the Folklore Project.
Scotty heard that I was thinking about quitting Apple because of his actions, so he called me into his office and asked what it would take for me to stay? I said, maybe if I could work on the Mac project, which Steve had just taken over from Jef Raskin.
We were developing an innovative Personal Information Manager called Chandler but a couple years ago I took off from that to do a project writing down my memoirs essentially, reminiscing about the development of the Macintosh.
I left General Magic in 1996 to become an Internet hobbyist - got a T-1 line to my house. At one point I had all four food banks of the Bay Area hosted from this house here.
Apple was our benefactor at starting General Magic, but about a year later decided they would rather BE General Magic and tried to make us blink out of existence... which we eventually did, but it took a few years.
But I think Steve's main contribution besides just the pure leadership is his passion for excellence. He's a perfectionist. Good enough isn't good enough. And also his creative spirit. You know he really, really wants to do something great.