 Some find problematic the very same thing having different properties at different times (see the problem of temporary intrinsics discussed below). Setting that general problem aside, there are special cases of it that generate some of the most intractable issues about identity. One results from persisting things putatively having different parts at different times. Consider an object capable of changing its parts, such as a cup at a time when its handle is still attached. At that time the cup appears to consist of the following two parts: a smaller one, its handle, together with a larger one consisting of the rest of the cup. Call the larger of these parts the truncated cup. The cup, otherwise unscathed, proceeds to lose its handle. At the earlier time, with its handle still intact, the cup is surely distinct from the truncated cup. Later, after the removal of the cup's handle, the cup spatially coincides with the truncated cup. Each object is, at the later time, composed from exactly the same atoms. As one philosopher has put it about a different example, at the later time the cup and the truncated cup are as alike as one pea in a pod (Denis Robinson, in conversation). Should we say that the cup and truncated cup are earlier distinct, but later identical? The problem is that saying so arguably conflicts with a fundamental principle governing identity called Leibniz's Law.