The Messy Business of Security Economics.
There is no such thing as security.
I’m not being a realist here (“there are no sure bets”) nor is this mere nihilism (“you will never be safe!”).
There is no such thing as security in the abstract.You cannot be generically secure — you can only be secure from something. A sprinkler system increases your security from fires, but not burglars. Not only that, but a sprinkler system reduces your security from water-damage.