Every time I lock my bike to a wall loop I fear a topologist will appear and prove my bike is not attached to the loop, or in fact, not even locked

#cycling

@oivaeskola Not even theoretical. A fair while ago I saw a pair of pictures from Amsterdam, of a bike first locked by a wire lock to one of those canal-side poles, and then the same bike to a similar canal-side pole right on the other side of the canal! Some practical joker did the topology exercise...
@martinvermeer oh shoot! I think I witnessed a similar prank which involved a bike locked to a street light (and many beers)