We don’t often think about the role of time in life-or-death situations, perhaps because Hollywood has distorted our sense of what happens in a violent encounter. In the movies, gun battles are drawn-out affairs, where one cop has time to whisper dramatically to his partner, and the villain has time to call out a challenge, and the gunfight builds slowly to a devastating conclusion. Just telling the story of a gun battle makes what happened seem to have taken much longer than it did. Listen to de Becker describe the attempted assassination a few years ago of the president of South Korea: “The assassin stands up, and he shoots himself in the leg. That’s how it starts. He’s nervous out of his mind. Then he shoots at the president and he misses. Instead he hits the president’s wife in the head. Kills the wife. The bodyguard gets up and shoots back. He misses. He hits an eight-year-old boy. It was a screw-up on all sides. Everything went wrong.” How long do you think that whole sequence took? Fifteen seconds? Twenty seconds? No, three-point-five seconds.

I think that we become temporarily autistic also in situations when we run out of time. The psychologist Keith Payne, for instance, once sat people down in front of a computer and primed them—just like John Bargh did in the experiments described in chapter 2—by flashing either a black face or a white face on a computer screen. Then Payne showed his subjects either a picture of a gun or a picture of a wrench. The image was on the screen for 200 milliseconds, and everyone was supposed to identify what he or she had just seen on the screen. It was an experiment inspired by the Diallo case. The results were what you might expect. If you are primed with a black face first, you’ll identify the gun as a gun a little more quickly than if you are primed with a white face first. Then Payne redid his experiment, only this time he sped it up. Instead of letting people respond at their own pace, he forced them to make a decision within 500 milliseconds—half a second. Now people began to make errors. They were quicker to call a gun a gun when they saw a black face first. But when they saw a black face first, they were also quicker to call a wrench a gun. Under time pressure, they began to behave just as people do when they are highly aroused. They stopped relying on the actual evidence of their senses and fell back on a rigid and unyielding system, a stereotype.

“When we make a split-second decision,” Payne says, “we are really vulnerable to being guided by our stereotypes and prejudices, even ones we may not necessarily endorse or believe.” Payne has tried all kinds of techniques to reduce this bias. To try to put them on their best behavior, he told his subjects that their performance would be scrutinized later by a classmate. It made them even more biased. He told some people precisely what the experiment was about and told them explicitly to avoid stereotypes based on race. It didn’t matter. The only thing that made a difference, Payne found, was slowing the experiment down and forcing people to wait a beat before identifying the object on the screen. Our powers of thin-slicing and snap judgments are extraordinary. But even the giant computer in our unconscious needs a moment to do its work. The art experts who judged the Getty kouros needed to see the kouros before they could tell whether it was a fake. If they had merely glimpsed the statue through a car window at sixty miles per hour, they could only have made a wild guess at its authenticity.

For this very reason, many police departments have moved, in recent years, toward one-officer squad cars instead of two-. That may sound like a bad idea, because surely having two officers work together makes more sense. Can’t they provide backup for each other? Can’t they more easily and safely deal with problematic situations? The answer in both cases is no. An officer with a partner is no safer than an officer on his own. Just as important, two-officer teams are more likely to have complaints filed against them. With two officers, encounters with citizens are far more likely to end in an arrest or an injury to whomever they are arresting or a charge of assaulting a police officer. Why? Because when police officers are by themselves, they slow things down, and when they are with someone else, they speed things up. “All cops want two-man cars,” says de Becker. “You have a buddy, someone to talk to. But one-man cars get into less trouble because you reduce bravado. A cop by himself makes an approach that is entirely different. He is not as prone to ambush. He doesn’t charge in. He says, ‘I’m going to wait for the other cops to arrive.’ He acts more kindly. He allows more time.”

Would Russ, the young man in the car in Chicago, have ended up dead if he had been confronted by just one officer? It’s hard to imagine that he would have. A single officer—even a single officer in the heat of the chase—would have had to pause and wait for backup. It was the false safety of numbers that gave the three officers the bravado to rush the car. “You’ve got to slow the situation down,” Fyfe says. “We train people that time is on their side. In the Russ case, the lawyers for the other side were saying that this was a fast-breaking situation. But it was only fast-breaking because the cops let it become one. He was stopped. He wasn’t going anywhere.”

What police training does, at its best, is teach officers how to keep themselves out of this kind of trouble; to avoid the risk of momentary autism. In a traffic stop, for instance, the officer is trained to park behind the car. If it’s at night, he shines his brights directly into the car. He walks toward the car on the driver’s side, then stops and stands just behind the driver, shining his flashlight over the shoulder onto his or her lap. I’ve had this happen to me, and I always feel a bit like I’m being disrespected. Why can’t the officer stand and talk to me face-to-face, like a normal human being? The reason is that it would be virtually impossible for me to pull a gun on the officer if he’s standing behind me. First of all, the officer is shining his flashlight on my lap, so he can see where my hands are and whether I’m going for a gun. And even if I get my hands on the gun, I have to twist almost entirely around in my seat, lean out the window, and fire around the door pillar at the officer (and remember, I’m blinded by his brights)—and all this in his full view. The police procedure, in other words, is for my benefit: it means that the only way the officer will ever draw his gun on me is if I engage in a drawn-out and utterly unambiguous sequence of actions.

Fyfe once ran a project in Dade County, Florida, where there was an unusually high number of violent incidents between police officers and civilians. You can imagine the kind of tension that violence caused. Community groups accused the police of being insensitive and racist. The police responded with anger and defensiveness; violence, they said, was a tragic but inevitable part of police work. It was an all-too-familiar script. Fyfe’s response, though, was to sidestep that controversy and conduct a study. He put observers in squad cars and had them keep a running score of how the officers’ behavior matched up with proper training techniques. “It was things like, did the officer take advantage of available cover?” he said. “We train officers to make themselves the smallest possible target, so you leave it to the bad guy to decide whether they’ll be shooting or not. So we were looking at things like, did the officer take advantage of available cover or did he just walk in the front door? Did he keep his gun away from the individual at all times? Did he keep his flashlight in his weak hand? In a burglary call, did they call back for more information or did they just say ten-four? Did they ask for backup? Did they coordinate their approach?—you know, you be the shooter, I’ll cover you. Did they take a look around the neighborhood? Did they position another car at the back of the building? When they were inside the place, did they hold their flashlights off to the side?—because if the guy happens to be armed, he’s going to shoot at the flashlight. On a traffic stop, did they look at the back of the car before approaching the driver? These kind of things.”