Until \(t\) it is obviously the case that for each statement in your notebook, there is a parallel statement asserting that the emerald \(x\) found at place \(y\) date \(z (z \le t)\) is grue. Each of these statements is analytically equivalent with the corresponding one in your notebook. All these grue-evidence statements taken together confirm the hypothesis that all emeralds are grue (L4), and they confirm this hypothesis to the exact same degree as the green-evidence statements confirmed the hypothesis that all emeralds are green. But if that is the case, then the following two predictions are also confirmed to the same degree: