Ok, I'm from the US but the guy I guess has a point... He's saying that you shouldn't have to come up with a new name for an amount until you come to the point where you have to say an amount twice. For example: We need a "Million" because it would be weird to say "One Thousand Thousand". So we could say what we call a Billion "One Thousand Million" without saying any of our defined amounts twice together. We could repeat this up to "999,999 Million" (um not sure on that one, looks strange), then the next number we would hit would hit is "One Million Million" thus needing a new amount "1 Billion". I myself think in terms of 1000's I guess, so saying "1 Thousand Million" sounds strange compared to "1 Billion" and it gets even stranger the higher you go