But you don't care about finding the original password. You only care about finding a string that after applying the hash function, gives the same out. That's

But you don't care about finding the original password. You only care about finding a string that after applying the hash function, gives the same out. That's why you can have a hash function like h(x) = 0, whose value gives you no information about x, and still not being able to use it.