A man is told to make a circle
He makes this:
Where is the man?
Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up.Sign up to join this community
In Manhattan, because that is what a "circle" (defined to be the set of points of a certain set distance d away from a given point) looks like when using the taxicab (or Manhattan) metric.
Clearly the man is
in $L^1$ space.
He was asked to draw a circle, namely the set of all points at distance $1$ from a fixed centre.