[Stefik’s] four ideas about the Internet is that we think about Internet, num­ber one as a library. And this was the 90s and we had this elec­tron­ic library, the dig­i­tal library. That doesn’t mean that we dig­i­tized libraries, it means that that’s the metaphor we used to think about the Internet, as a place that has infor­ma­tion that we can look up. His sec­ond was we think of it as the mail. Or you could say the tele­phone. And so that’s more about indi­vid­u­als and inter­per­son­al­ly com­mu­ni­cat­ing in some way. The third is that we think of it as a vir­tu­al world. And the fourth is that we think of it as a mar­ket­place.