Remember that Edison especially, but Franklin to some degree, were synthesizers more than inventors. They took things around them that they saw needed improvement and they improved them. IMO, many great thinkers don't necessarily think "new" thoughts, but re-frame existing thoughts in a whole new way. Jobs is a master at that.
Jobs himself reflects on all this in 95-96 in the interview with Wired that is referenced earlier in the thread:
http://www.wired.com/wired/archive/4.02/jobs_pr.html
Let me quote a few things that tells me clearly the world view of SJ..
First, at a framework level, philosophically:
"..Creativity is just connecting things. ... creative people .. were able to connect experiences they've had and synthesize new things...."
"..The broader one's understanding of the human experience, the better design we will have..."
On "design" and "metaphors"
"Some people think design means how it looks. But of course, if you dig deeper, it's really how it works. The design of the Mac wasn't what it looked like, although that was part of it. Primarily, it was how it worked...."
"the minute I live primarily in a connected versus a stand-alone world, there are new options for metaphors."
On what it takes to do design right:
"Grok" ("to understand profoundly and intuitively")
How it is done...
"The people who built Silicon Valley were engineers. They learned business..
They had a real belief that humans, if they worked hard with other creative, smart people, could solve most of humankind's problems. I believe that very much."..
So in short ( my own summary )
"Have a team of smart people with diverse experience so there are enough dots to connect and grok the problem"..
Not easy, better said than done.....Rest are details.
And this is not related to this issue, but this quote is chuckle worthy.. and quite true..
"The (TV) networks are in business to give people exactly what they want. That's a far more depressing thought. Conspiracy is optimistic! You can shoot the bastards!"