I didn’t write this after Paris. I didn’t write this after Istanbul Airport. I didn’t write this after Baghdad the first time, second or third time this year (It’s a grim privilege, but a privilege nevertheless, to be able to refer to a terrorist attack in your home town and not have people ask “which one?”) But I’m writing it now, after Nice, because my first two instinctive emotional responses when I heard about the attacks on the radio this morning were horror (because there were kids there you sadistic f***, and you knew it, you did that on purpose), and then fear.

“God,” I thought. “Another one. It just keeps happening. It seems like it’s all the time at the moment.”

I’m a risk analyst. That’s my job. I use numbers to understand what we ought to be afraid of, and how afraid we should be. So here are some numbers:

In France, in the last two years, there have been eight attacks, killing a total of 247 people. There are 66 million people in France. At the current level of activity, their odds of being killed in a terrorist attack in a given year are less than two ten-thousandths of one per cent. That’s 27 times lower than their odds of dying in a car accident.

The victims of the Nice attack

Even if the current level of attacks continues for 80 years (which would be unprecedented), a child born today in France would have only one percent of a one percent chance of being killed in one.

In Turkey, the probability is lower. 194 people killed in attacks since the start of 2015, with a population of 80 million gives each one of them a roughly one ten-thousandth of one percent chance of being killed in one, in any given year.

In Iraq, the numbers are much worse. Iraq, of course, is enmeshed in the horror of a full-on civil war in which tens of thousands have lost their lives, so this kind of analysis is both trickier and seems a little moot. But still, we have to recognise that there have been at least 13 terror attacks in Iraq on civilian populations since the start of 2015, killing more than 650 people. Even away from the front-line of the civil war, Isis’ victims are overwhelmingly Muslim. Even in Iraq though, your odds of being caught in one of these attacks are less than one in a hundred thousand.

Reducing these deaths to numbers and comparing them to traffic fatalities might seem callous. After all, a car crash doesn’t mean to kill anyone. These people were attacked, the targets of deliberate, violent intent, and that makes a difference. Moreover, none of this will be any comfort whatsoever to a mother in Nice whose child was murdered this week, nothing I can say would be. Before those grieving, I am left in dumbstruck, useless, sympathetic horror, as we all are.

But I think these numbers are important, for two reasons:

First, the reaction I had is exactly the reaction the perpetrators of these atrocities want. They rely on us feeling bombarded by the news. They want us to feel besieged. They want us to feel at risk. They want us to be afraid. It’s called terrorism after all. Understanding the limitations of their ability to hurt us helps, in some small way, to frustrate their aim.

Secondly, there is no reason, none whatsoever, to believe that Isis and other terrorist groups are holding back. They are killing this many of us precisely because this is as many of us as they can kill. And the reason for that is straightforward: there aren’t very many of them. Despite all we hear about radicalisation and recruitment and schoolchildren travelling to Syria to train and fight with them, here, in our cities and our communities, their numbers pale in comparison to our own. They want us to believe they are widespread amongst the Muslim members of our communities, but they simply aren’t. If they were, they’d be killing a lot more of us.

These numbers stack the odds heavily in our favour, and the only way in which we can abandon that advantage is to make more terrorists. Isis understand that, and that is very much what they are trying to make us do.

In pictures: Bastille Day Nice attack Show all 30 1 /30 In pictures: Bastille Day Nice attack In pictures: Bastille Day Nice attack A man reacts near bouquets of flowers near the scene where a truck ran into a crowd at high speed killing scores and injuring more who were celebrating the Bastille Day national holiday in Nice Reuters In pictures: Bastille Day Nice attack A woman arrives with a toy and a bouquet of flowers as people pay tribute near the scene where a truck ran into a crowd in Nice Reuters In pictures: Bastille Day Nice attack A woman reacts as she places flowers in front of the memorial set on the 'Promenade des Anglais' where the truck crashed into the crowd during the Bastille Day celebrations in Nice EPA In pictures: Bastille Day Nice attack People gather to view the floral tributes near the site of the truck attack in the French resort city of Nice AP In pictures: Bastille Day Nice attack A man reacts near bouquets of flowers as people pay tribute near the scene where a truck ran into a crowd at high speed killing scores and injuring more who were celebrating the Bastille Day national holiday, in Nice Reuters In pictures: Bastille Day Nice attack Floral tributes are laid out near the site of the truck attack in the French resort city of Nice AP In pictures: Bastille Day Nice attack A child's toy is placed among the floral tributes laid out near the site of the truck attack in the French resort city of Nice AP In pictures: Bastille Day Nice attack Investigators continue at the scene near the heavy truck that ran into a crowd at high speed killing scores who were celebrating the Bastille Day in Nice Reuters In pictures: Bastille Day Nice attack Crime scene investigators work on the 'Promenade des Anglais' after the truck crashed into the crowd during the Bastille Day celebrations in Nice EPA In pictures: Bastille Day Nice attack A forensic expert examines dead bodies covered with a blue sheet on the Promenade des Anglais seafront in the French Riviera city of Nice Getty Images In pictures: Bastille Day Nice attack A forensic expert evacuates a dead body on the Promenade des Anglais seafront in the French Riviera city of Nice, after a gunman smashed a truck into a crowd of revellers celebrating Bastille Day Getty Images In pictures: Bastille Day Nice attack A man reacts as he sits near a French flag along the beachfront the day after a truck ran into a crowd at high speed killing scores celebrating the Bastille Day in Nice Reuters In pictures: Bastille Day Nice attack Discarded items are left on the beach, not far from the site of the truck attack in the French resort city of Nice AP In pictures: Bastille Day Nice attack Bullet holes in the windscreen of the lorry that was driven into the crowd at high speed Reuters In pictures: Bastille Day Nice attack A man walks through debris on the street in Nice, France, the morning after a lorry ran into a crowd, killing at least 84 and injuring 50 Reuters In pictures: Bastille Day Nice attack Rescue workers help an injured woman to get in a ambulance AFP/Getty Images In pictures: Bastille Day Nice attack Authorities investigate a truck after it plowed through Bastille Day revelers in the French resort city of Nice, France AP In pictures: Bastille Day Nice attack Celebrations of Bastille Day were targeted by the lorry driver AP In pictures: Bastille Day Nice attack People cross the street with their hands on thier heads as a French soldier secures the area after at least 84 people were killed along the Promenade des Anglais in Nice Reuters In pictures: Bastille Day Nice attack A paramedic attends one of the dozens of people injured in the Nice Bastille Day attack In pictures: Bastille Day Nice attack Soldiers march on street where the lorry crashed into the crowd REUTERS In pictures: Bastille Day Nice attack A man sits next to a body seen on the ground after at least 84 people were killed in Nice, when a truck ran into a crowd celebrating the Bastille Day national holiday Reuters In pictures: Bastille Day Nice attack Bodies are seen on the ground after at least 84 people were killed in Nice, when a truck ran into a crowd celebrating the Bastille Day national holiday Reuters In pictures: Bastille Day Nice attack Children were among the 84 killed in the atrocity, with around 50 more hospitalised Reuters In pictures: Bastille Day Nice attack French Interior Minister Bernard Cazeneuve (2nd L) speaks to the media in Nice AFP/Getty Images In pictures: Bastille Day Nice attack A man walks with his hands up as police officers carry out checks on people in the centre of French Riviera town of Nice AFP/Getty Images In pictures: Bastille Day Nice attack With injured people laying in the street police and onlookers react near to a truck in Nice AP In pictures: Bastille Day Nice attack Police officers, firefighters and rescue workers are seen at the site of the attack AFP/Getty Images In pictures: Bastille Day Nice attack Police officers speak with a soldier after a truck that ploughed into a crowd leaving a fireworks display in the French Riviera town of Nice AFP/Getty Images In pictures: Bastille Day Nice attack Police shine a light into the cab as they approach the driver's cab of a truck, in Nice AP

There is a phrase that we’re likely to hear over the next days and weeks, and it’s a phase that should scare anyone who hears it: “Something must be done.” It was uttered before the UK Parliament voted to join a bombing campaign in Syria. An act which achieved essentially nothing of any military value, as any worthwhile targets were already being hit by the Americans, but handily signed our name to the inevitable civilian casualties that Isis use to recruit allies over here.

I’m not trying to tell anyone how to feel, especially not someone living in Baghdad through the middle of a civil war with the front line only a couple of hundred miles away. I have no idea what that’s like. I don’t have any right to legislate those feelings. All I can do, all my work trains me to do, is to provide some perspective on the facts that might change them.

We’re shocked, and afraid and angry, of course we are. That’s a human reaction to attacks like these, and shocked, afraid, angry people want to strike back, to punish those who hurt us and banish the helplessness we feel at being so randomly targeted. But if we do that – and this is tough to accept but that doesn’t make it any less true – as a matter of mathematics, we make things worse.

Sometimes all you can do that will actually help is tend the wounded, bury the dead, comfort the grieving, smile at your neighbour and do your best to live as you always have done. If you live in a country that’s been targeted like this, the terrorists are fighting a battle for your mind, don’t give it to them. Hopefully, in resisting them, the numbers help.