@danhill Something about circles of trust… have to trust other users of public transport to behave appropriately, but trusting them to control their dogs seems a step too far. We trust runners not to sprint around corners and knock over old ladies, but not e-scooter riders. Perhaps with good reason in the short term, as change requires people learning new norms. But maybe fear & rigidity is also a response to general lack of control in the often hostile city. Sorry, bit off topic!