"My childhood interest in exploring places where other kids disappeared is how we got here in the first place; a sign would do the opposite of help. No guarantee that they'd be that sensible about it, of course. For that matter I guess we have no way of knowing how long it's actually been on Earth since we left. About a minute there to an hour here means about a week there to a year here, so probably at least a few weeks, but I don't exactly have a precise measurement of the difference and I don't even know if it stays the same all the time."