It's sometimes hard for me to articulate to others why I read so much science-fiction, especially to those who see it as just another form of juvenile fantasy.

It's sometimes hard for me to articulate to others why I read so much science-fiction, especially to those who see it as just another form of juvenile fantasy. Articles like this serve to illustrate that the writers who are carefully plotting out the future today may end up influencing the future of technology and culture more than they imagined. Clarke, Asimov, PKD, Gibson, they are all accepted as good writers, but I think some day a selection of such writers may be seen as visionaries who not only predicted much of what was to come but significantly influenced the course of that history. Personal computers were widely dismissed in the early days as impractical and unnecessary, yet I suspect it was those engineers who had been exposed to some of the possibilities science fiction writers were imagining for such devices that saw where they might end up. Once the idea of a globally connected network of computers became entrenched in enough people's minds, it was only a matter of time before the problems would be solved. TCP, DNS and HTTP were all important milestones in that path, but we could have converged on another set of protocols if things had been different. Good writers can lay out a vision of the potential in such a system in a way that private business and government usually can't, because they operate on a very different time horizon where they can look past the limitations of what's possible today and imagine what it might become.