How Does Reliability Map to Risk?

Google offers a programme so that developers can spend six months experiencing sare an and acting as an s are. One of the other ways that we talk about running systems as s r es is managing risk. We never at google try to aim for a hundred % reliability, right? So let's start there. And then if you go and open up the s are book to, i think way chapter, the third chapter, it's one of the first things that the book talks about - how does reliability map to risk? That was where i wanted to go next.