A key that does not fit the lock will never be able to unlock it.
And whose fault is that?
The key for not being able to match the lock
or
The lock for not being able to accept the key?
And if you try too hard to open this lock with the wrong key, at least one will end up broken, damaged, wrecked.
But, what of it - the borken key, the damaged locked? Remember its the attempt that counts.
Isn't it better to have tried and realized we've got the wrong combination, whether than ponder whether the key fits the lock?
Stolen from Olivia who stole this from her friend.... ^^