Sorites Paradox

The sorites paradox (sometimes translated as the paradox of the heap because in Ancient Greek: σωρίτης sōritēs means "heaped up") is a paradox that arises from vague predicates. A typical formulation involves a heap of sand, from which grains are individually removed. Under the assumption that removing a single grain does not turn a heap into a non-heap, the paradox is to consider what heaps when the process is repeated enough times: is a single remaining grain still a heap? (Or are even no grains at all a heap?) If not, when did it change from a heap to a non-heap?