Broken Chain

I'll never be the same after this.
You can fix a broken chain, but you can never fix what happened when the chain broke.
That consequences of a broken chain......
A cyclist might trip and fall because his bicycle chain broke;
A crane might drop its heavy load because the chain broke;
A dog might get lost and run away because its chain broke off.

You can get a new chain for all the above, but you just can't undo what follows.