Other things I don't have a clue about - a fire hydrant
Even within the United States, fire hydrants vary greatly from city to city.
I remember the first time I moved to a city that had those little squatty dark blue ones. I thought they were water main access points.
It's interesting to see so many people on HN assessing that captchas are biased toward American culture. Very frequently I get captchas that include things I don't know, and when I look them up, they turn out to be Indian in origin.
Even within the United States, fire hydrants vary greatly from city to city.
I remember the first time I moved to a city that had those little squatty dark blue ones. I thought they were water main access points.
It's interesting to see so many people on HN assessing that captchas are biased toward American culture. Very frequently I get captchas that include things I don't know, and when I look them up, they turn out to be Indian in origin.