from New York Times

Meet the Life Hackers

By CLIVE THOMPSON
Published: October 16, 2005

In 2000, Gloria Mark was hired as a professor at the University of California at Irvine. Until then, she was working as a researcher, living a life of comparative peace. She would spend her days in her lab, enjoying the sense of serene focus that comes from immersing yourself for hours at a time in a single project. But when her faculty job began, that all ended. Mark would arrive at her desk in the morning, full of energy and ready to tackle her to-do list – only to suffer an endless stream of interruptions. No sooner had she started one task than a colleague would e-mail her with an urgent request; when she went to work on that, the phone would ring. At the end of the day, she had been so constantly distracted that she would have accomplished only a fraction of what she set out to do. “Madness,” she thought. “I’m trying to do 30 things at once.”

Mark is a scientist of “human-computer interactions” who studies how high-tech devices affect our behavior, so she was able to do more than complain: she set out to measure precisely how nuts we’ve all become. Beginning in 2004, she persuaded two West Coast high-tech firms to let her study their cubicle dwellers as they surfed the chaos of modern office life. One of her grad students, Victor Gonzalez, sat looking over the shoulder of various employees all day long, for a total of more than 1,000 hours. He noted how many times the employees were interrupted and how long each employee was able to work on any individual task.

When Mark crunched the data, a picture of 21st-century office work emerged that was, she says, “far worse than I could ever have imagined.” Each employee spent only 11 minutes on any given project before being interrupted and whisked off to do something else. What’s more, each 11-minute project was itself fragmented into even shorter three-minute tasks, like answering e-mail messages, reading a Web page or working on a spreadsheet. And each time a worker was distracted from a task, it would take, on average, 25 minutes to return to that task. To perform an office job today, it seems, your attention must skip like a stone across water all day long, touching down only periodically.

Yet while interruptions are annoying, Mark’s study also revealed their flip side: they are often crucial to office work. Sure, the high-tech workers grumbled and moaned about disruptions, and they all claimed that they preferred to work in long, luxurious stretches. But they grudgingly admitted that many of their daily distractions were essential to their jobs. When someone forwards you an urgent e-mail message, it’s often something you really do need to see; if a cellphone call breaks through while you’re desperately trying to solve a problem, it might be the call that saves your hide. In the language of computer sociology, our jobs today are “interrupt driven.” Distractions are not just a plague on our work – sometimes they are our work. To be cut off from other workers is to be cut off from everything.

For a small cadre of computer engineers and academics, this realization has begun to raise an enticing possibility: perhaps we can find an ideal middle ground. If high-tech work distractions are inevitable, then maybe we can re-engineer them so we receive all of their benefits but few of their downsides. Is there such a thing as a perfect interruption?
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On the space station, astronauts must attend to dozens of experiments while also monitoring the station’s warning systems for potentially fatal mechanical errors. NASA wanted to ensure that its warnings were perfectly tuned to the human attention span: if a warning was too distracting, it could throw off the astronauts and cause them to mess up million-dollar experiments. But if the warnings were too subtle and unobtrusive, they might go unnoticed, which would be even worse. The NASA engineers needed something that would split the difference.

Czerwinski noticed that all the information the astronauts received came to them as plain text and numbers. She began experimenting with different types of interruptions and found that it was the style of delivery that was crucial. Hit an astronaut with a textual interruption, and he was likely to ignore it, because it would simply fade into the text-filled screens he was already staring at. Blast a horn and he would definitely notice it – but at the cost of jangling his nerves. Czerwinski proposed a third way: a visual graphic, like a pentagram whose sides changed color based on the type of problem at hand, a solution different enough from the screens of text to break through the clutter.

The science of interruptions began more than 100 years ago, with the emergence of telegraph operators – the first high-stress, time-sensitive information-technology jobs. Psychologists discovered that if someone spoke to a telegraph operator while he was keying a message, the operator was more likely to make errors; his cognition was scrambled by mentally “switching channels.” Later, psychologists determined that whenever workers needed to focus on a job that required the monitoring of data, presentation was all-important. Using this knowledge, cockpits for fighter pilots were meticulously planned so that each dial and meter could be read at a glance.
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Information is no longer a scarce resource – attention is. David Rose, a Cambridge, Mass.-based expert on computer interfaces, likes to point out that 20 years ago, an office worker had only two types of communication technology: a phone, which required an instant answer, and postal mail, which took days. “Now we have dozens of possibilities between those poles,” Rose says. How fast are you supposed to reply to an e-mail message? Or an instant message? Computer-based interruptions fall into a sort of Heisenbergian uncertainty trap: it is difficult to know whether an e-mail message is worth interrupting your work for unless you open and read it – at which point you have, of course, interrupted yourself. Our software tools were essentially designed to compete with one another for our attention, like needy toddlers.

The upshot is something that Linda Stone, a software executive who has worked for both Apple and Microsoft, calls “continuous partial attention”: we are so busy keeping tabs on everything that we never focus on anything. This can actually be a positive feeling, inasmuch as the constant pinging makes us feel needed and desired. The reason many interruptions seem impossible to ignore is that they are about relationships – someone, or something, is calling out to us. It is why we have such complex emotions about the chaos of the modern office, feeling alternately drained by its demands and exhilarated when we successfully surf the flood.

Czerwinski discovered that the computer industry was still strangely ignorant of how people really used their computers. Microsoft had sold tens of millions of copies of its software but had never closely studied its users’ rhythms of work and interruption. How long did they linger on a single document? What interrupted them while they were working, and why?

To figure this out, she took a handful of volunteers and installed software on their computers that would virtually shadow them all day long, recording every mouse click. She discovered that computer users were as restless as hummingbirds. On average, they juggled eight different windows at the same time – a few e-mail messages, maybe a Web page or two and a PowerPoint document. More astonishing, they would spend barely 20 seconds looking at one window before flipping to another.

Why the constant shifting? In part it was because of the basic way that today’s computers are laid out. A computer screen offers very little visual real estate. It is like working at a desk so small that you can look at only a single sheet of paper at a time. A Microsoft Word document can cover almost an entire screen. Once you begin multitasking, a computer desktop very quickly becomes buried in detritus.

This is part of the reason that, when someone is interrupted, it takes 25 minutes to cycle back to the original task. Once their work becomes buried beneath a screenful of interruptions, office workers appear to literally forget what task they were originally pursuing. We do not like to think we are this flighty: we might expect that if we are, say, busily filling out some forms and are suddenly distracted by a phone call, we would quickly return to finish the job. But we don’t. Researchers find that 40 percent of the time, workers wander off in a new direction when an interruption ends, distracted by the technological equivalent of shiny objects. The central danger of interruptions, Czerwinski realized, is not really the interruption at all. It is the havoc they wreak with our short-term memory: What the heck was I just doing?

When Gloria Mark and Mary Czerwinski, working separately, looked at the desks of the people they were studying, they each noticed the same thing: Post-it notes. Workers would scrawl hieroglyphic reminders of the tasks they were supposed to be working on (“Test PB patch DAN’s PC – Waiting for AL,” was one that Mark found). Then they would place them directly in their fields of vision, often in a halo around the edge of their computer screens. The Post-it notes were, in essence, a jury-rigged memory device, intended to rescue users from those moments of mental wandering.

For Mark and Czerwinski, these piecemeal efforts at coping pointed to ways that our high-tech tools could be engineered to be less distracting. When Czerwinski walked around the Microsoft campus, she noticed that many people had attached two or three monitors to their computers. They placed their applications on different screens – the e-mail far off on the right side, a Web browser on the left and their main work project right in the middle – so that each application was “glanceable.” When the ding on their e-mail program went off, they could quickly peek over at their in-boxes to see what had arrived.
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On the bigger screen, people completed the tasks at least 10 percent more quickly – and some as much as 44 percent more quickly. They were also more likely to remember the seven-digit number, which showed that the multitasking was clearly less taxing on their brains. Some of the volunteers were so enthralled with the huge screen that they begged to take it home. In two decades of research, Czerwinski had never seen a single tweak to a computer system so significantly improve a user’s productivity. The clearer your screen, she found, the calmer your mind.
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None of them used complex technology to manage their to-do lists: no Palm Pilots, no day-planner software. Instead, they all preferred to find one extremely simple application and shove their entire lives into it. Some of O’Brien’s correspondents said they opened up a single document in a word-processing program and used it as an extra brain, dumping in everything they needed to remember – addresses, to-do lists, birthdays – and then just searched through that file when they needed a piece of information. Others used e-mail – mailing themselves a reminder of every task, reasoning that their in-boxes were the one thing they were certain to look at all day long.

In essence, the geeks were approaching their frazzled high-tech lives as engineering problems – and they were not waiting for solutions to emerge from on high, from Microsoft or computer firms. Instead they ginned up a multitude of small-bore fixes to reduce the complexities of life, one at a time, in a rather Martha Stewart-esque fashion.

Many of O’Brien’s correspondents, it turned out, were also devotees of “Getting Things Done,” a system developed by David Allen, a personal-productivity guru who consults with Fortune 500 corporations and whose seminars fill Silicon Valley auditoriums with anxious worker bees. At the core of Allen’s system is the very concept of memory that Mark and Czerwinski hit upon: unless the task you’re doing is visible right in front of you, you will half-forget about it when you get distracted, and it will nag at you from your subconscious. Thus, as soon as you are interrupted, Allen says, you need either to quickly deal with the interruption or – if it’s going to take longer than two minutes – to faithfully add the new task to your constantly updated to-do list. Once the interruption is over, you immediately check your to-do list and go back to whatever is at the top.
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“In fairness, I think we bring some of this on ourselves,” says Merlin Mann, the founder of the popular life-hacking site 43folders.com. “We’d rather die than be bored for a few minutes, so we just surround ourselves with distractions. We’ve got 20,000 digital photos instead of 10 we treasure. We have more TV Tivo’d than we’ll ever see.” In the last year, Mann has embarked on a 12-step-like triage: he canceled his Netflix account, trimmed his instant-messaging “buddy list” so only close friends can contact him and set his e-mail program to bother him only once an hour. (“Unless you’re working in a Korean missile silo, you don’t need to check e-mail every two minutes,” he argues.)
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In the 1920’s, the Russian scientist Bluma Zeigarnik performed an experiment that illustrated an intriguing aspect of interruptions. She had several test subjects work on jigsaw puzzles, then interrupted them at various points. She found that the ones least likely to complete the task were those who had been disrupted at the beginning. Because they hadn’t had time to become mentally invested in the task, they had trouble recovering from the distraction. In contrast, those who were interrupted toward the end of the task were more likely to stay on track.

Gloria Mark compares this to the way that people work when they are “co-located” – sitting next to each other in cubicles – versus how they work when they are “distributed,” each working from different locations and interacting online. She discovered that people in open-cubicle offices suffer more interruptions than those who work remotely. But they have better interruptions, because their co-workers have a social sense of what they are doing. When you work next to other people, they can sense whether you’re deeply immersed, panicking or relatively free and ready to talk – and they interrupt you accordingly.
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This raises a possibility both amusing and disturbing: perhaps if we gave artificial brains more control over our schedules, interruptions would actually decline – because A.I. doesn’t panic. We humans are Pavlovian; even though we know we’re just pumping ourselves full of stress, we can’t help frantically checking our e-mail the instant the bell goes ding. But a machine can resist that temptation, because it thinks in statistics. It knows that only an extremely rare message is so important that we must read it right now.
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By a sizable margin, life hackers are devotees not of Microsoft but of Apple, the company’s only real rival in the creation of operating systems – and a company that has often seemed to intuit the need for software that reduces the complexity of the desktop. When Apple launched its latest operating system, Tiger, earlier this year, it introduced a feature called Dashboard – a collection of glanceable programs, each of which performs one simple function, like displaying the weather. Tiger also includes a single-key tool that zooms all open windows into a bingo-card-like grid, uncovering any “lost” ones. A superpowered search application speeds up the laborious task of hunting down a missing file. Microsoft is now playing catch-up; Vista promises many of the same tweaks, although it will most likely add a few new ones as well, including, possibly, a 3-D mode for seeing all the windows you have open.

Apple’s computers have long been designed specifically to soothe the confusions of the technologically ignorant. For years, that meant producing computer systems that seemed simpler than the ones Microsoft produced, but were less powerful. When computers moved relatively slowly and the Internet was little used, raw productivity – shoving the most data at the user – mattered most, and Microsoft triumphed in the marketplace. But for many users, simplicity now trumps power. Linda Stone, the software executive who has worked alongside the C.E.O.’s of both Microsoft and Apple, argues that we have shifted eras in computing. Now that multitasking is driving us crazy, we treasure technologies that protect us. We love Google not because it brings us the entire Web but because it filters it out, bringing us the one page we really need. In our new age of overload, the winner is the technology that can hold the world at bay.

Yet the truth is that even Apple might not be up to the task of building the ultimately serene computer. After all, even the geekiest life hackers find they need to trick out their Apples with duct-tape-like solutions; and even that sometimes isn’t enough. Some experts argue that the basic design of the computer needs to change: so long as computers deliver information primarily through a monitor, they have an inherent bottleneck – forcing us to squeeze the ocean of our lives through a thin straw. David Rose, the Cambridge designer, suspects that computers need to break away from the screen, delivering information through glanceable sources in the world around us, the way wall clocks tell us the time in an instant. For computers to become truly less interruptive, they might have to cease looking like computers. Until then, those Post-it notes on our monitors are probably here to stay.

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