[1ntCobra]

Years ago, I had someone ask me to give him "an order of magnitude estimate". And I replied, "Wow that's the first time anyone has ever asked me for an estimate where I could be off by a factor of 10!" And of course he said, no "an order of magnitude estimate" is just a commonly used term for a rough estimate. I told him he was wrong and perhaps he should just use "rough estimate" instead of misusing mathematical concepts that he was unfamiliar with.