John Gruber wrote about the philosophy Steve Jobs brought to Apple.

Jobs spoke of the approach he wanted to bring to Apple:

One of the things I’ve always found is that you’ve got to start with the customer experience and work backwards to the technology. You can’t start with the technology and try to figure out where you’re going to try to sell it. And I’ve made this mistake probably more than anybody else in this room. And I got the scar tissue to prove it.

He went on to explain about being focussed:

What about OpenDoc? What about it? [Audience laughs.] It’s dead, right? Let me say something that’s sort of generic. I know some of you spent a lot of time working on stuff that we put a bullet in the head of. I apologize. I feel your pain. But Apple suffered for several years from lousy engineering management. I have to say it. And there were people that were going off in 18 different directions doing arguably interesting things in each one of them. Good engineers — lousy management. And what happened was you look at the farm that’s been created with all these different animals going in different directions and it doesn’t add up. The total is less than the sum of the parts.

And so we had to decide, what are the fundamental directions we’re going in? And what makes sense and what doesn’t? And there were a bunch of things that didn’t. And microcosmically they might have made sense; macrocosmically they made no sense. And you know, the hardest thing is… you think about focusing, right? You think, “Well, focusing is saying yes”. No, focusing is about saying no. Focusing is about saying no. And you’ve got to say no, no, no. When you say no, you piss off people.

Today, Apple is still saying a thousand no’s for every yes.