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I'm just keying that because I'm not good at tracking time. But yeah, that's generally what I would do is listen for environmental sounds. Look around. See what you find. But in terms of I want a heuristic that will get me there most of the time, proximity to the elevator is a good one I think. Sometimes it doesn't work, but that's a good one. Like you said, the end of a hallway, that works too. Anyway, I've also been in blindness tech land, so I guess I'll make my report about that today. My grandfather, my mother's father is in his 80s, and he is losing a lot of his vision. And he lives in Florida.