I don't know from information theory, but consider this: (As a post-W.W.II baby boomer) I had always heard the phrase "turn of the century" used unambiguously to mean around the time that 1899 became 1900. But as someone pointed out to me, nowadays the same phrase "turn of the century" is rarely mentioned without *which century* being added ... evidently because *without* the added info, the bare phrase "turn of the century" could mean the recent one or the earlier one. However, the called-for information is not necessarily the "which century" that people tend to assume is what's missing. For most people, the phrase "turn of the 20th century" is about as likely to mean 1899 —> 1900 as 1999 —> 2000 (or for pedants, add one). At first, "turn of the century" was unambiguous, but now even the augmented phrase "turn of the 20th century" is ambiguous. Clearly, more information is less. —Dan