By and large, Roman numerals are awkward to use, and they are quite hopeless when it comes to the simplest of mathematical operations, let alone anything truly demanding. Nevertheless, Roman numerals are occasionally quite parsimonious and even elegant. Latin letter M for millennium is a case in point. Similarly, MML is so much more appealing and evocative than 2050 as a time marker. Therefore, Roman numerals may survive in our calendar, where Latin letters M, D, C, L, X, V, and I are permanently enshrined. Come to think of it, we will soon need a few additional conventions to mark time—say, Latin letter Q for 5000, E for 10000, and so on. But it is perhaps immodest to go beyond ten-thousand years, the eon of yesteryear.