In article ,
Mxsmanic wrote:

Mike Ash writes:

Pray tell, how do you avoid running into walls, falling down stairs,
getting hit by cars, etc. when you do that?

The question is one of equilibrium, not obstacle avoidance. There are no
stairs, walls, or cars in the air.

It is possible to walk competently for an indefinite period with one's eyes
closed. It is not possible to fly competently for any significant period with
eyes closed.

No, the question is whether "you can't rely on this sense alone" is
equivalent to "this sense is not useful". Walking consists of a LOT more
than staying upright. Close your eyes next time you're walking down the
street and see how long it takes you to get hit by a bus. Clearly you
need your eyes. And yet, your sense of balance is still useful. So it is
with physical sensations in VMC.

--
Mike Ash
Radio Free Earth
Broadcasting from our climate-controlled studios deep inside the Moon