have plenty of stored food on the raft, but the occasional fresh halibut and salmon are nice to eat.
Fisheye has taken what appears to be an instruction manual from the heavy black suitcase. It is a miniature three-ring binder with pages of laser-printed text. The binder is just a cheap unmarked one bought from a stationery store. In these respects, it is perfectly familiar to Hiro: it bears the earmarks of a high-tech product that is still under development. All technical devices require documentation of a sort, but this stuff can only be written by the techies who are doing the actual product development, and they absolutely hate it, always put the dox question off to the very last minute. Then they type up some material on a word processor, run it off on the laser printer, send the departmental secretary out for a cheap binder, and that's that.
But this only occupies Fisheye for a little while. He spends the rest of the time just staring off at the horizon, as though he's expecting Sicily to heave into view. It doesn't. He is despondent over the failure of his mission, and spends a lot of time mumbling under his breath, trying to find a way to salvage it.
'If you don't mind my asking,' Hiro says, 'what was your mission anyway?'
Fisheye thinks this one over for a while. 'Well it depends on how you look at it. Nominally, my objective is to get a fifteen-year-old girl back from these assholes. So my tactic was to take a bunch of their bigwigs hostage, then arrange a trade.'
'Who's this fifteen-year-old girl?'
Fisheye shrugs. 'You know her. It's Y.T.'
'Is that really your whole objective?'
'The important thing is, Hiro, that you have to understand the Mafia way. And the Mafia way is that we pursue larger goals under the guise of personal relationships. So, for example, when you were a pizza guy you didn't deliver pizzas fast because you made more money that way, or because it was some kind of a fucking policy. You did it because you were carrying out a personal covenant between Uncle Enzo and every customer. This is how we avoid the trap of self-perpetuating ideology. Ideology is a virus So getting this chick back is more than just getting a chick back. It's the concrete manifestation of an abstract policy goal. And we like concrete - right, Vic?'
Vic allows himself a judicious sneer and a deep grinding laugh.
'What's the abstract policy goal in this case?' Hiro says.
'Not my department,' Fisheye says. 'But I think Uncle Enzo is real pissed at L. Bob Rife.'
Hiro is messing around in Flatland. He is doing this partly to conserve the computer's batteries; rendering a three-dimensional office takes a lot of processors working fulltime, while a simple two-dimensional desktop display requires minimal power.
But his real reason for being in Flatland is that Hiro Protagonist, last of the freelance hackers, is hacking. And when hackers are hacking, they don't mess around with the superficial world of Metaverses and avatars. They descend below this surface layer and into the netherworld of code and tangled nam-shubs that supports it, where everything that you see in the Metaverse, no matter how lifelike and beautiful and three-dimensional, reduces to a simple text file: a series of letters on an electronic page. It is a throwback to the days when people programmed computers through primitive teletypes and IBM punch cards.
Since then, pretty and user-friendly programming tools have been developed. It's possible to program a computer now by sitting at your desk in the Metaverse and manually connecting little preprogrammed units, like Tinkertoys. But a real hacker would never use such techniques, any more than a master auto mechanic would try to fix a car by sliding in behind the steering wheel and watching the idiot lights on the dashboard.
Hiro does not know what he is doing, what he is preparing for. That's okay, though. Most of programming is a matter of laying groundwork, building structures of words that seem to have no particular connection to the task at hand.
He knows one thing: The Metaverse has now become a place where you can get killed. Or at least have your brain reamed out to the point where you might as well be dead. This is a radical change in the nature of the place. Guns have come to Paradise.
It serves them right, he realizes now. They made the place too vulnerable. They figured that the worst thing that could happen was that a virus might get transferred into your computer and force you to ungoggle and reboot your system. Maybe destroy a little data if you were stupid enough not to install any medicine. Therefore, the Metaverse is wide open and undefended, like airports in the days before bombs and metal detectors, like elementary schools in the days before maniacs with assault rifles. Anyone can go in and do anything that they want to.
There are no cops. You can't defend yourself, you can't chase the bad people. It's going to take a lot of work to change that - a fundamental rebuilding of the whole Metaverse, carried out on a planetwide, corporate level.
In the meantime, there may be a role for individuals who know their way around the place. A few hacks can make a lot of difference in this situation. A freelance hacker could get a lot of shit done, years before the giant software factories bestir themselves to deal with the problem.
The virus that ate through Da5id's brain was a string of binary information, shone into his face in the form of a bitmap - a series of white and black pixels, where white represents zero and black represents one. They put the bitmap onto scrolls and gave the scrolls to avatars who went around the Metaverse looking for victims.
The Clint who tried to infect Hiro in The Black Sun got away, but he left his scroll behind - he didn't reckon on having his arms lopped off - and Hiro dumped it into the tunnel system below the floor, the place where the Graveyard Daemons live. Later, Hiro had a Daemon take the scroll back to his workshop. And anything that is in Hiro's house is, by definition, stored inside his own computer. He doesn't have to jack into the global network in order to access it.
It's not easy working with a piece of data that can kill you. But that's okay. In Reality, people work with dangerous substances all the time
- radioactive isotopes and toxic chemicals. You just have to have the right tools: remote manipulator arms, gloves, goggles, leaded glass. And in Flatland, when you need a tool, you just sit down and write it. So Hiro starts by writing a few simple programs that enable him to manipulate the contents of the scroll without ever seeing it.
The scroll, like any other visible thing in the Metaverse, is a piece of software. It contains some code that describes what it looks like, so that your computer will know how to draw it, and some routines that govern the way it rolls and unrolls. And it contains, somewhere inside of itself, a resource, a hunk of data, the digital version of the Snow Crash virus.
Once the virus has been extracted and isolated, it is easy enough for Hiro to write a new program called SnowScan. SnowScan is a piece of medicine. That is, it is code that protects Hiro's system -both his hardware and, as Lagos would put it, his bioware - from the digital Snow Crash virus. Once Hiro has installed it in his system, it will constantly scan the information coming in from outside, looking for data that matches the contents of the scroll. If it notices such information, it will block it.
There's other work to do in Flatland. Hiro's good with avatars, so he writes himself an invisible avatar - just because, in the new and more dangerous Metaverse, it might come in handy. This is easy to do poorly and surprisingly tricky to do well. Almost anyone can write an avatar that doesn't look like anything, but it will lead to a lot of problems when it is used. Some Metaverse real estate - including The Black Sun - wants to know how big your avatar is so that it can figure out whether you are colliding with another avatar or some obstacle. If you give it an answer of zero - you make your avatar infinitely small - you will either crash that piece of real estate or else make it think that something is very wrong. You will be invisible, but everywhere you go in the Metaverse you will leave a swath of destruction and confusion a mile wide. In other places, invisible avatars are illegal. If your avatar is transparent and reflects no light whatsoever
- the easiest kind to write - it will be recognized instantly as an illegal avatar and alarms will go off. It has to be written in such a way that other people can't see it, but the real estate software doesn't realize that it's invisible.
There are about a hundred little tricks like this that Hiro wouldn't know about if he hadn't been programming avatars for people like Vitaly Chernobyl for the last couple of years. To write a really good invisible avatar from scratch would take a long time, but he puts one together in several hours by recycling bits and pieces of old projects left behind in his computer. Which is how hackers usually do it.
While he's doing that, he comes across a rather old folder with some transportation software in it. This is
