What does ';even a blind squirrel finds a nut every once in a while'; mean?

I mean, I have an idea of what it could mean, but I'm not sure. What do you guys believe it means?What does ';even a blind squirrel finds a nut every once in a while'; mean?
What is means is, ';Even a broken clock is right twice a day!';What does ';even a blind squirrel finds a nut every once in a while'; mean?
It means that even if you are the unluckiest


person alive, you will find something worthwhile if you just keep looking.
its along d lines on every cloud silver lining n lyt at d end of every tunnel. luck and good fortune can b found even in worse case scenarios
Even somebody who has no clue what they are doing (is blind) managed to get something right once in a while (finds a nut).
I've heard people use it to mean ';you just got lucky and did something right - not because you really knew how';.
even stupid idiots get lucky a few times.