Even a blind squirrel finds a nut twice a day

This congruent conflation was uttered by a former colleague in a training session.  He mixed the sayings “even a blind squirrel finds a nut once in awhile” and “even a broken clock is right twice a day”, both meaning someone who is misguided  can still be correct by luck or by chance.   Both idioms start with “even a” which probably created the mash up.  A big thanks to Tim Stueve for hearing this one and passing it on!