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 IANA topologist, but I did actually do this to someone who'd got in a muddle with armfuls of bags and locks and managed to fail to lock her bike to the stand. I figured that being patronised by a random stranger was better than having your bike stolen.