Comment by fwip
Blind people don't have a big problem with bumping into furniture in their own home, much the same way you don't wipe out when walking from your bed to the bathroom in the dark. And instead of you getting 30 seconds of practice every other night, they navigate that way all the time.
Also, a bunch of noise playing whenever you walk through your house sounds like a huge bother.
Is the refrigerator door open or closed? What about the drawers? Is the vacuum in the middle of the path?
Blind people don't need to know this things, of course. Don't need anybody, and can navigate everything like champs. On the other way, would really do harm to be able to know this on advance?.