"I can't do that at all," says Bella to Adana. "Some things are 'near enough' and some things are 'not near enough' and I don't have any special understanding of them in relation to each other and the only speeds are 'moving' and 'not moving, or rather, only moving insofar as the earth is'. Oh, some time if it's convenient you'd be a good safety net for testing my ability to fake-fly, I think, in case I ever want to follow a moving vehicle that is not obligingly stopping at stoplights? Since you're used to providing portals to fast-moving teenage girls? But if you don't have time I can put a request in to Powers Counseling or something."