I think it&#x27;s more generally &quot;what you can&#x27;t see doesn&#x27;t exist&quot;.<p>If there is a dodgy-looking guy staring at you when you go home, you get frightened. If he watching you through the CCTV then it&#x27;s all fine. A bit like if you have a video of a guy getting killed on youtube it&#x27;s horrible, but if it&#x27;s a one liner in a newspaper about a drone bombing a house then it&#x27;s ok. If there is a video of a guy killing someone with a knife in the street of London, it will be remembered for years as a horrendous terrorist attack. But if the police publishes statistics about knife attacks in your neighborhood then it&#x27;s just a bunch of boring numbers.