Because Mexico is in North America, despite what Colin said? Seems worth clarifying.

After a tour de force comment like the one at https://news.ycombinator.com/item?id=27639407 I'm inclined to want more writing from this person, not less.

Most people in the world don't seem to have any problem with distinguishing North-America-the-Continent from North-America-the-Region depending on context. For example in my native tongue there's not even a way of phrasing them differently. Yet humans can somehow disambiguate the two just fine.