比如说有这么一段:

None of this had even a hope of any practical application in my

life. But ten years later, when we were designing the first Macintosh

computer, it all came back to me. And we designed it all into the Mac.

It was the first computer with beautiful typography.

If I had never

dropped in on that single course in college, the Mac would have never

had multiple typefaces or proportionally spaced fonts.

And since

Windows just copied the Mac, its likely that no personal computer

would have them. If I had never dropped out, I would have never

dropped in on this calligraphy class, and personal computers might not

have the wonderful typography that they do.

Of course it was

impossible to connect the dots looking forward when I was in college.

But it was very, very clear looking backwards ten years later.