What exactly is risk control? Let me explain with a small example from today.

There is a private gym in our community that requires an access card to enter, but recently the lock broke and you can get in without the access card.

Do I need to bring my access card when I go?

I have been bringing my access card every time these past few months, even though I haven't needed it each time.

This is my understanding of risk control; for that one in ten thousand danger, it requires a painful cost.